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The ability to anticipate and detect changes in human movement helps people to modify their behaviors in ever changing environments. Studies indicate that expertise modulates observation of domain-specific actions in sports-a process that... more
The ability to anticipate and detect changes in human movement helps people to modify their behaviors in ever changing environments. Studies indicate that expertise modulates observation of domain-specific actions in sports-a process that is crucial for adapting rapidly to a new situation, often before awareness of environmental changes is achieved. Here, we explored the electrophysiological underpinnings of wheelchair basketball players predicting the fate of free throws performed by wheelchair basketball athletes. We performed electroencephalography (EEG) in semi-professional wheelchair players with different degrees of expertise (players) and in ambulant, non-expert people (controls) while they observed movie stimuli of a free throw that could land inside or outside the basket. On each trial, participants were asked to predict the outcome of the throw. For each group, event-related potentials (ERPs) were averaged as a function of condition, using only the trials that were correctly predicted. Results show that compared to controls, expert players exhibit a greater negative amplitude of oCNV over Pz (an observational contingent negative variation-like waveform which is considered a marker of action effect prediction) during the wrist movement preceding the ball release (the last 100 ms of the shot), which carries the most crucial kinematic information regarding the fate of the throw. Our data provide further support to the view that functional modulation of the action observation network is associated with expertise.
Visual stimuli such as packaging and colour play an important role in shaping consumers' perceptions regarding food products. A quantitative approach was used to explain the link between colour combinations (complementary vs. analogous... more
Visual stimuli such as packaging and colour play an important role in shaping consumers' perceptions regarding food products. A quantitative approach was used to explain the link between colour combinations (complementary vs. analogous colours) and consumers' perceptions on calories, healthiness and purchase intention. A questionnaire was conducted with 344 valid respondents who were asked to rate their perceptions regarding two different packages for cookies: one, blue and orange, and another, blue and green. The results demonstrated that the blue and orange packaging (complementary colour set) was perceived to be less healthy and more caloric. However, participants revealed a higher intention to purchase this package. Finally, managerial implications, limitations and future research directions are discussed.
We have all pondered on the physical and emotional benefits of exercise and more often than not, we find ourselves associating exercise to health and wellbeing. However, recent scientific developments have brought into light several... more
We have all pondered on the physical and emotional benefits of exercise and more often than not, we find ourselves associating exercise to health and wellbeing. However, recent scientific developments have brought into light several benefits of exercise that had not yet been addressed by the scientific community before. The benefits of exercise that reach beyond physical and mental wellbeing such as benefits for the brain and, more specifically, for cognition, attention, and executive functions are now under close investigation. These new insights render the education community powerful, as we have the tools to better our education system by simply applying these insights to benefit the learning process of our children. Here we discuss several tales of success and how the Portuguese Education System should emulate other countries that have put this newly obtained knowledge into practice.
Words are very important to share ideas, but less is known regarding the way the message is communicated in the leadership process. The present study explored how nonverbal delivery factors might impact leaders’ charisma, followers’ mood,... more
Words are very important to share ideas, but less is known regarding the way the message is communicated in the leadership process. The present study explored how nonverbal delivery factors might impact leaders’ charisma, followers’ mood, and followers’ performance. The research specifically focused on how immediacy and dominance impacted the relationship between leaders’ delivery styles and followers’ mood, perceptions of charismatic leadership, and performance. Results showed that immediate and dominant leadership behaviors were critical in eliciting positive mood and reducing negative mood in followers. In the absence of immediate and dominance behaviors in leaders, followers’ negative mood increased and positive mood decreased. Moreover, the dominant and immediate displays also led to higher perceptions of charismatic leadership. Crucially, only simple or mixed dominant delivery styles led to an enhancement in the performance of followers. The mediating role of followers’ positive mood on the relationship between leaders’ delivery styles and followers’ performance was also examined. More importantly, positive mood explained the link between leaders’ delivery styles and performance. Theoretical and practical implications of the role of delivery styles in the leadership process were discussed.
Research Interests:
Programming and executing a subsequent move is inherently linked to the ability to anticipate the actions of others when interacting. Such fundamental social ability is particularly important in sport. Here, we discuss the possible... more
Programming and executing a subsequent move is inherently linked to the ability to anticipate the actions of others when interacting. Such fundamental social ability is particularly important in sport. Here, we discuss the possible mechanisms behind the highly sophisticated anticipation skills that characterize experts. We contend that prediction in sports might rely on a finely tuned perceptual system that endows experts with a fast, partially unconscious, pickup of relevant cues. Furthermore, we discuss the role of the multimodal, perceptuomotor, multiple-duty cells (mirror neurons) that play an important function in action anticipation by means of an inner motor simulation process. Finally, we suggest the role of predictive coding, interoception, and the enteric nervous system as the processual and biological support for intuition and “gut feelings” in sports—the missing link that might explain outstanding expert performance based on action anticipation.
Research Interests:
For long, people have wondered about the reasons for the superior performance of elite athletes. As it seems, researchers have been divided between reasons that pertain to nature and those that pertain to nurture. More recently, more... more
For long, people have wondered about the reasons for the superior performance of elite athletes. As it seems, researchers have been divided between reasons that pertain to nature and those that pertain to nurture. More recently, more complex interactionist theories have come to light. These theories posit that both genes and environment contribute to the development of motor expertise in a non-linear way. It is possible that this discussion might never be resolved. Here, we propose that instead of concentrating on the reasons " why " , we concentrate on the " how " , i.e., brain function associated to motor expertise. There is much support for specific neural activation associated to expertise in sports. Here we discuss some of the main findings in this area and propose that by understanding the motor expert brain, we might optimize training and, ultimately, performance. Crucially, we suggest that neurofeedback techniques might constitute an important tool to achieve this.
Research Interests:
Background: Educational Neuroscience is a relatively new discipline. However, many obstacles persist in delaying the success of an interface between Neuroscience and Education. One such major obstacle has been the spread of neuromyths... more
Background: Educational Neuroscience is a relatively new discipline. However, many obstacles persist in delaying the success of an interface between Neuroscience and Education. One such major obstacle has been the spread of neuromyths (Geake 2008).
Purpose: The main aim of this study was to verify if Portuguese teachers are susceptible to misinterpreting neuroscientific findings and believe in neuromyths that might ultimately impair their teaching - or simply waste time investing in techniques that will not aid their students.
Sample: A sample of 583 Portuguese teachers from different areas of expertise participated in this study. The participants were aged between 25 and 61 years (M=41; SD=9) and taught at Preschool to High School levels.
Design and methods: We designed a questionnaire to assess if teachers believed in the neuromyths. Non-myth / myth statements were presented, alongside an open-ended question concerning the links between brain and education. Together, these queries afforded a database of the teachers’ knowledge concerning neuroscientific facts and neuromyths. 
Results: Our results suggest that teachers fail to distinguish myths from facts, irrespective of the area taught and level of teaching. However, our findings also indicate that, although teachers have difficulties in untangling myths from facts, Portuguese teachers are interested in the workings of the brain and recognise the potential of neuroscientific information in education.
Conclusions: Results from this study suggest that communication between neuroscientists and teachers must be improved through an open, interdisciplinary dialogue. This research raises questions that should help to develop Educational Neuroscience as a discipline. Namely, we highlight the need for a translation of the educational neuroscience facts into a language shared by teachers; and the need for specific training so that teachers might make adequate use of education-related neuroscientific findings in the classroom.
Aim: Research on Autism Spectrum Disorders (ASD) has mainly focused on the study of social behavioral deficits (e.g. imitation, eye gaze, play, etc.). These studies have emphasized the high-level impairments that lead to abnormal social... more
Aim: Research on Autism Spectrum Disorders (ASD) has mainly focused on the study of social behavioral deficits (e.g. imitation, eye gaze, play, etc.). These studies have emphasized the high-level impairments that lead to abnormal social interaction in ASD. However, as important as the study of social behavior in ASD, is research on lower-level processes that might contribute to the emergence and development of the atypical social behaviors that characterize this condition. Perceptual differences constitute one such factor. Here, we aim to investigate the possible influence of specific visual motion perception deficits in conceptual processing. Materials and Methods: We compared the performance of children with ASD, with that of children with moderate to severe learning disorders (MLD) or typical development (TD) on a series of computerized tasks. These tasks assessed motion detection in non-social and socially embedded backgrounds or contexts. Results: The results provide evidence for speed-selective impairments in processing socially embedded targets in ASD. Conclusions: Based on these findings, we suggest that low-level perceptual deficits might play an important role in the development of social impairments.
Research Interests:
Sports Science is a fairly new and much needed scientific discipline that has been gaining terrain in the scientific community. However, and similarly to other novel disciplines, in order to gain a place as a consolidated scientific... more
Sports Science is a fairly new and much needed scientific discipline that has been gaining terrain in the scientific community. However, and similarly to other novel disciplines, in order to gain a place as a consolidated scientific discipline, there is a certain need of assertion. Such assertion of a new field of research mainly relies on the development of novel and insightful theories. Nevertheless, the new need not oppose the old, and findings from other, more established fields of research, need not be negated as a form of affirmation of the newer discipline. Take Expertise in Sports. Typically, Sports Science approaches this theme without integrating findings from other areas such as Experimental and Social Psychology and Neuroscience. We suggest that these are but different levels of analysis that can be reconciled and that such reconciliation should render Sports Science a more comprehensive and richer domain.
Research Interests:
Aim: The understanding of the neural correlates of motor learning and consolidation has seen significant progress in recent years. Such advances have afforded the development of better training plans and the potentiation of motor skill... more
Aim: The understanding of the neural correlates of motor learning and consolidation has seen significant progress in recent years. Such advances have afforded the development of better training plans and the potentiation of motor skill learning in sports, in neurological recovery or simply in everyday life. However, the variations in motor
learning and consolidation across different ages are still not well understood. In order to investigate this, we assessed
performance in two different tasks (Finger Tapping Sequence and Go/No-Go tasks) in four different Age groups (Children; Young Adults; Mature Adults, and Seniors).

Materials and Methods: The two tasks were executed across three different time periods (T0, T1 and T2), during which
performance was measured: Day 1. Baseline (T0) and Performance After Training – i.e. Learning (T1) and; Day 2.
Consolidation Performance – 24 hours post-T1 without any additional training (T2).

Results: We show that the group of Seniors did not enhance performance 24 hours post-training in the Finger Tapping
Sequence task, while all the other Age groups did. There were no differences in performance in Children, but age and sex interacted to enhance performance. This complex mechanism was shown to be task-specific. Moreover, none of the Age groups enhanced performance in T2 in the Go/No-Go Task, but we found a female advantage after practice in Mature Adults and Seniors.

Conclusions: The influence of both Age and Sex in task performance and consolidation is to be taken into consideration in order to ameliorate training and potentiate individual capacities while delaying age-related impairments.
A soccer player asks his girlfriend to marry him. To celebrate, they buy a red car. That day, during practice, the soccer player shoots to score a goal, unprecedentedly using his left foot, anticipating the goalkeeper’s next move. All... more
A soccer player asks his girlfriend to marry him. To celebrate,
they buy a red car. That day, during practice, the soccer player
shoots to score a goal, unprecedentedly using his left foot,
anticipating the goalkeeper’s next move. All of these actions
result from social, consumer, and perceptual-motor decision making (DM) processes. Although the soccer player might
not be an expert decision maker in relationships or car deals,
he is surely an expert when it comes to deciding how to score
a goal. Not all decisions involve the same cognitive processes or neural underpinnings. Thus, when considering expert DM, it is crucial to clarify both the expertise domain and the decisional processes involved. Here, in this opinion mini-review, I present a brief overview of action anticipation (AA) in sports as a particular case of expert DM, making use of theories from economics to mathematical and clinical fields. Additionally, I discuss the cognitive and neural mechanisms subtending AA and show how certainty and saliency influence AA just like in other DM situations. Finally, I discuss how expert DM in the form of AA in sports can amount to a gut feeling, just like the gut feeling the soccer player needed to propose or buy a red car, instead of blue.
A pesar de la importancia y de la permeabilidad de las investigaciones neurocientíficas con el contexto deportivo, todavía hay un largo camino que recorrer en esta área. Los ejemplos prácticos desarrollados suponen solamente algunas... more
A pesar de la importancia y de la permeabilidad de las investigaciones neurocientíficas con el contexto deportivo, todavía hay un largo camino que recorrer en esta área. Los ejemplos prácticos desarrollados suponen solamente algunas posibilidades de operacionalizar los trabajos aquí discutidos. Escasean todavía estudios que operacionalicen y transporten, de una forma sistémica y concreta, los conceptos neurocientíficos hacia el contexto deportivo. Esperamos que este trabajo de revisión venga a inspirar nuevos estudios experimentales orientados en este sentido.
"""Objectives: Physical exercise has benefits that go beyond health and well-being, namely in cognitive, motor and psychophysiological areas. The discovery of a shared neural network between action observation and execution (Action-... more
"""Objectives: Physical exercise has benefits that go beyond health and well-being, namely in cognitive, motor and psychophysiological areas. The discovery of a shared neural network between action observation and execution (Action- Observation Network) led us to hypothesize that watching human motor action might improve cognitive and motor aspects of performance and proneness for exercise.

Methods: Sixty participants viewed a Motor (M) (n=30) or a Non- Motor (NM) (n=30) movie with strong or weak content of motoric features of human action, respectively. Performance in d2 Attention test, Fitts' Motor task, and a Proneness for Exercise Visual Analog Scale was assessed before and after movie visualization. Psychophysiological measures were recorded throughout the experiment.

Results: Our results demonstrate an increase in proneness for exercise, and greater improvement in attention-related cognitive aspects in the M group. The aforementioned benefits of action observation did not modulate motor performance. A mental effort deployment was associated to the decrease in heart rate variability after visualization of the NM movie. This was not conducive to attention channeling on task performance. Conversely, M movie observation seemed to be associated to a
cognitive load release, affording attention deployment for the resolution of the subsequent tasks.

Conclusions: It seems that some benefits associated to physical practice can result from the mere visualization of movies with human motor action content. These are the improvement in attention related cognitive skills associated to  psychophysiological changes that support a disengagement from
mental effort. Crucially, the observation of exercise behavior seems to be a key factor for exercise adherence."""
Background. Educational Neuroscience is a relatively new discipline. However, many obstacles persist in delaying the success of an interface between Neuroscience and Education. One such major obstacle has been the spread of neuromyths... more
Background. Educational Neuroscience is a relatively new discipline. However, many obstacles persist in delaying the success of an interface between Neuroscience and Education. One such major obstacle has been the spread of neuromyths (Geake 2008).

Purpose. The main aim of this study was to verify if Portuguese teachers are susceptible to misinterpreting neuroscientific findings and believe in neuromyths that might ultimately impair their teaching - or simply waste time investing in techniques that will not aid their students.

Sample. A sample of 583 Portuguese teachers from different areas of expertise participated in this study. The participants were aged between 25 and 61 years (M=41; SD=9) and taught at Preschool to High School levels.

Design and methods. We designed a questionnaire to assess if teachers believed in the neuromyths. Non-myth / myth statements were presented, alongside an open-ended question concerning the links between brain and education. Together, these queries afforded a database of the teachers’ knowledge concerning neuroscientific facts and neuromyths.

Results. Our results suggest that teachers fail to distinguish myths from facts, irrespective of the area taught and level of teaching. However, our findings also indicate that, although they have difficulties in untangling myths from facts, Portuguese teachers are interested in the workings of the brain and recognise the potential of neuroscientific information in education.

Conclusions. Results from this study support that communication between neuroscientists and teachers must be improved through an open, interdisciplinary dialogue. This research raises questions that should help to develop Educational Neuroscience as a discipline. Namely, we highlight the need for a “translation” of the educational neuroscience facts into a language shared by teachers; and the need for specific training so that teachers might make adequate use of education-related neuroscientific findings in the classroom.

Keywords: Neuromyths; Educational Neuroscience; teacher perceptions; brain; learning.
"
This study aimed to assess how the capacity to acquire, form and consolidate motor memories might vary across different tasks and different groups (with and without motor expertise). 20 athletes and 21 non-athletes were tested on five... more
This study aimed to assess how the capacity to acquire, form and consolidate motor memories might vary across different tasks and different groups (with and without motor expertise). 20 athletes and 21 non-athletes were tested on five motor tasks: a motor sequence task, a reaction time task, two visuo-manual tasks, and a balance task. Performance was measured before training (T0), immediately after training (T1), and 24 hours after training (T2), to assess motor acquisition, and motor memory formation and consolidation. T2 performance was higher in both groups, without additional training, on the motor sequence task, reaction time task and one of the visuo-manual tasks (Pouring Task). Athletes had better baseline performance at T0 than non-athletes on these tasks. Findings suggest that differential formation and consolidation processes underlie different motor tasks. Although athletes did not outperform non-athletes on motor memory consolidation, they were more efficient in acquiring novel tasks, perhaps because the required motor schemes might have been based on previously acquired ones.
"The ability to predict the actions of others is quintessential for effective social interactions, particularly in competitive contexts (e.g. in sport) when knowledge about upcoming movements allows anticipating rather than reacting to... more
"The ability to predict the actions of others is quintessential for effective social interactions, particularly in competitive contexts (e.g. in sport) when knowledge about upcoming movements allows anticipating rather than reacting to opponents. Studies suggest that we predict what others are doing by using our own motor system as an internal forward model and that the fronto-parietal action observation network (AON) is fundamental for this ability. However, multiple-duty cells dealing with action perception and execution have been found in a variety of cortical regions. Here we used functional magnetic resonance imaging to explore, in expert basketball athletes and novices, whether the ability to make early predictions about the fate of sport-specific actions (i.e. free throws) is underpinned by neural regions beyond the classical AON. We found that, although involved in action prediction, the fronto-parietal AON was similarly activated in novices and experts. Importantly, athletes exhibited relatively greater activity in the extrastriate body
area during the prediction task, probably due to their expert reading of the observed action kinematics. Moreover, experts exhibited higher activation in the bilateral inferior frontal gyrus and in the right anterior insular cortex when producing errors, suggesting that they might become aware of their own errors. Correct action prediction induced higher posterior insular cortex activity in experts and higher orbito-frontal activity in novices, suggesting that body awareness is important for performance monitoring in experts, whereas novices rely more on higher-order decision-making strategies. This functional reorganization highlights the tight relationship between action anticipation, error awareness and motor expertise leading to body-related processing and differences in decision-making processes."
"Responses to pictures of famous tennis and soccer athletes are slower when the responding effector is a hand or foot, respectively, indicating that visual recognition of individuals characterized by skilled motor behavior interferes... more
"Responses to pictures of famous tennis and soccer athletes are
slower when the responding effector is a hand or foot, respectively, indicating that visual recognition of individuals characterized by skilled motor behavior interferes with the motor reactivity of non-proficient observers. By contrast, directly viewing actions induces motor facilitation, suggesting that actions are mapped in the observers’ motor system. Here, we used single-pulse Transcranial Magnetic Stimulation to determine 1) whether observing and recognizing the identity of famous tennis and soccer athletes selectively reduce the corticospinal excitability of arm and leg representations (categorization), 2) whether any athlete-related inhibition effect contrasts the facilitation associated with direct action observation (categorization 1 action), and 3) whether the
classic action observation--related facilitation effect is found when viewing ‘‘in action’’ nonathlete models (action). In 3 experiments, we found that amplitude of motor evoked potentials (MEPs) recorded from leg and arm muscles gradually shifted from reduction to facilitation, moving from the categorization to the action observation tasks. Thus, semantic derivation of motor skills is reflected in limb-specific reduction of MEP amplitude, indicating that even abstract action knowledge is embodied in the motor system and that mapping
others’ actions on the basis of categorization or of their direct
observation relies on competing functional mechanisms."
Educational Neuroscience is currently raising high attention by the educational and neuroscientific community. However, society has created too many expectations concerning what Neuroscience can bring to Education. With this study, we aim... more
Educational Neuroscience is currently raising high attention by the educational and neuroscientific community. However, society has created too many expectations concerning what Neuroscience can bring to Education. With this study, we aim to identify eventual distorted expectations of the teachers and propose ways to overcome these. This study was carried out in Portugal with 30 participating schools, where 627 questionnaires were answered by teachers from Preschool to High School. Our results show that there are still misunderstandings concerning the Portuguese teachers‟ views about the links between Neuroscience and Education. More collaborative efforts between professionals of both fields are needed for the field of Educational Neuroscience to succeed.
In this review, I tackle the vicissitudes of visual perception. I compare different theoretical, clinical and experimental contributions that seem to support the existence of a connecting thread between low-level visual perception... more
In this review, I tackle the vicissitudes of visual perception. I compare different theoretical, clinical and experimental contributions that seem to support the existence of a connecting thread between low-level visual perception deficits and high level behavioral social traits. Throughout this dissertation I establish a parallel between this rich array of scientific data and two specific developmental disorders: Autism Spectrum Disorders and Williams Syndrome. The analysis of data on these particular disorders supports a previous theoretical model and broadens its inferences. This sheds new light on the way that different factors such as brain development, visual experiences, perceptual deficits and strength of reward all contribute to the establishment of a visual and ultimately, social behavior.
"Certain deficits in visual motion sensitivity can be assessed via traditional motion coherence tasks where the subject is prompted to detect a percentage of coherent motion embedded in a background of random moving dots. This technique... more
"Certain deficits in visual motion sensitivity can be assessed
via traditional motion coherence tasks where the subject is
prompted to detect a percentage of coherent motion embedded in a background of random moving dots. This technique has
enabled researchers to infer a deficit in visual motion coherence
detection in people with Autism Spectrum Disorder (ASD) and
Williams Syndrome (WS) which has been suggested to account
for a deficit in function of the dorsal stream in these two groups.
It is possible, that not only motion coherence, but several different visual motion deficits coexist. Moreover, a different pattern of low level motion detection deficits might underlie each of these developmental disorders. Here we investigate six different aspects of motion detection sensitivity in ASD and WS with the aim to verify if different deficit patterns might be generalized to each clinical group. Nine children with ASD, 10 children with WS and 96 Typically Developing (TD) children participated in this study. Six Random Dot Kinematogram tasks were used. Within group score patterns were very heterogeneous across tasks for both clinical groups. However, participants with ASD showed consistent deficits in a ‘Single Mobile’ task and participants with WS showed consistent deficits in a ‘Motion Coherence’ task. The data are discussed in terms of the dissociations found in the motion detection deficit patterns, possibly related with complex co-morbid visual-attention disorders."
Individuals with Williams Syndrome demonstrate impairments in visuospatial cognition. This has been ascribed to a local processing bias. More specifically, it has been proposed that the deficit arises from a problem in disengaging... more
Individuals with Williams Syndrome demonstrate impairments in visuospatial cognition. This has been ascribed to a local processing bias. More specifically, it has been proposed that the deficit arises from a problem in disengaging attention from local features. We present preliminary data from an integrated empirical and computational exploration of this phenomenon. Using a connectionist model, we first clarify and formalize the proposal that visuospatial deficits arise from an inability to locally disengage. We then introduce two empirical studies using Navon-style stimuli. The first explored sensitivity to local vs. global features in a perception task, evaluating the effect of a manipulation that raised the salience of global organization. Thirteen children with WS exhibited the same sensitivity to this manipulation as CA-matched controls, suggesting no local bias in perception. The second study focused on image reproduction and demonstrated that in contrast to controls, the children with WS were distracted in their drawings by having the target in front of them rather than drawing from memory. We discuss the results in terms of an inability to disengage during the planning stage of reproduction due to over-focusing on local elements of the current visual stimulus.
Impairments in visuospatial processing exhibited by individuals with Williams Syndrome (WS) have been ascribed to a local processing bias. The imprecise specification of this local bias hypothesis has led to contradictions between... more
Impairments in visuospatial processing exhibited by individuals with Williams Syndrome (WS) have been ascribed to a local processing bias. The imprecise specification of this local bias hypothesis has led to contradictions between different accounts of the visuospatial deficits in WS. We present two experiments
investigating visual processing of geometric Navon stimuli by children with WS. The first experiment examined image reproduction in a visuoconstruction task and the second experiment explored the effect of manipulating global salience on recognition of visual stimuli by varying the density of local elements possessed by the stimuli. In the visuoconstruction task, the children with WS did show a local bias with respect to controls, but only when the target being copied was present;
when drawing from memory, subjects with WS produced a heterogeneous pattern of answers. In the recognition task, children with WS exhibited the same sensitivity to global figures as matched controls, confirming previous findings in which no local bias in perception was found in WS subjects. We propose that subjects with WS are unable to disengage their attention from local elements during the planning stage of image reproduction (a visual-conflict hypothesis).
Milne and colleagnes have very nicely put together and linked the somewhat diverse sets of data from an important emerging area of research. The paper is clearly a reference point for future studies, as it captures the limitations of the... more
Milne and colleagnes have very nicely put together and linked the somewhat diverse sets of data from an important emerging area of research. The paper is clearly a reference point for future studies, as it captures the limitations of the research to date and pinpoints new directions to overcome these. After a very comprehensive review of existing research, Milne and colleagues suggest future questions that should be addressed to better understand the nature of reduced motion sensitivity in ASD and other developmental disorders. We consider these questions to be very important directives for future research. However, we feel that some of the premises discussed in this review might need additional clarification. We have raised similar questions from our own research with children with ASD and we would like to add new information and comment on some of the viewpoints that, in our opinion, still remain unclear. To this end we would like to raise four points for discussion.
Here, we present several studies that, taken together, point out to the modification of consciousness by the alteration of cerebral activity and vice-versa. The role of attention, although uncertain, should not be forgotten, nor that of... more
Here, we present several studies that, taken together, point out to the modification of consciousness by the alteration of cerebral activity and vice-versa. The role of attention, although uncertain, should not be forgotten, nor that of the relation with one’s own perceptive mean (interior and exterior). Crucially, we realize the potential of the mind and thought, as brain modulators, presage of human free-will. Indeed, we cannot conceive consciousness without its connection to the body and the brain, nor even as an independent entity of the individual’s surroundings.
Based on a considerable and consistent amount of data showing low level visual processing deficits in children with developmental disorders such as Autism Spectrum Disorder (ASD) and Williams Syndrome (WS), we decided to investigate the... more
Based on a considerable and consistent amount of data showing low level visual processing deficits in children with developmental disorders such as Autism Spectrum Disorder (ASD) and Williams Syndrome (WS), we decided to investigate the basis and consequences (i.e. impact on behavioral and social phenotype) of these deficits in these two clinical groups. The first question we addressed was: What low level visual deficits do these two disorders portray? This is, what low level visual deficits characterize these disorders independently of their mental and chronological age? (Study 1). We investigated deficits in visual motion sensitivity in 9 children with ASD, 10 children with WS and 96 typically developing children (TDC). We created six Random Dot Kinematogram tasks to assess sensitivities to different motion types. Within-group score patterns were very heterogeneous across tasks for both clinical groups. However, participants with ASD showed consistent deficits in a ‘Single Mobile’ task and participants with WS showed consistent deficits in a ‘Motion Coherence’ task. We discussed the data in terms of the dissociations found in the motion detection deficit patterns.

We suggested a genetic basis (extension of the deletion) in WS to account for the variability found. To explain the variability in ASD we suggested that low level visual deficits might be correlated with the placement on the social spectrum (Study 2). If deficits in visual perception exist at an early developmental stage they might hinder the correct processing of very fine social signs that involve motion or visual attention change (e.g. ocular saccades, facial expressions, etc.). We developed five computer-generated tasks to assess sensitivity to different motion speeds, attention shifting, motion coherence, ecological motion and form through motion. We tested 23 children with ASD, 36 children with moderate to severe learning disabilities (MLD) and 70 TDC. A social cognition score was also attributed to the children in the clinical groups, assessed by means of a parent interview. Indeed, visual processing deficit patterns were correlated with social cognition in ASD, but also in MLD and TD. However, the stronger deficit patterns in ASD allowed prediction of a stronger pattern of deficits in processing of social concepts. Moreover, detection of human made motion was no different than detection of a single mobile moving at a speed of 400pix/sec for all groups. But speed seems to affect children with ASD when processing socially embed targets. We discussed these results by revisiting the importance of low-level motion signals in the processing of social signs. A correlation between low level visual deficits and the position on the autistic social spectrum could help in predicting future social deficits at an early age and contribute to an adapted early intervention.

In another study (Study 3), we investigated the nature of one specific visual processing deficit in WS – visual processing bias to local elements composing a global shape. Impairments in visuospatial processing exhibited by individuals with WS have been ascribed to a local processing bias. We developed three computergenerated and pen and paper experiments investigating visual processing of geometric Navon stimuli. Thirteen children with WS exhibited the same sensitivity to global figures as 22 matched controls, confirming no local bias in perception. In a reproduction task the children with WS did show a local bias with respect to controls, but only when the target being copied was present. When drawing from memory, subjects with WS produced a heterogeneous pattern of answers. We proposed that subjects with WS are unable to disengage their attention from local elements during the planning stage of reproduction (visual-conflict hypothesis).

With these three studies we aimed to contribute to the specification of the importance of low level visual processing in the development of the unique behavioral and social phenotypes that characterize these two clinical groups.

Keywords: Autism Spectrum Disorder, Williams Syndrome, visual perception, visual motion deficits, local-global
deficits, social cognition.
Research Interests:
Bedny et al. (2008) propose that concepts are represented outside the sensory-motor cortices and are organized in keeping with their grammatical properties. The authors suggest that PLTC activity during action verb judgments might reflect... more
Bedny et al. (2008) propose that concepts are represented outside the sensory-motor cortices and are organized in keeping with their grammatical properties. The authors suggest that PLTC activity during action verb judgments might reflect retrieval of event concepts and that sensory features do not form the substrate of conceptual representation for word comprehension. One of the main findings obtained in Bedny et al.’s study to support the idea that there is no reactivation of the sensory motor cortices, was the non-overlap of PLTC and visual motion regions. The authors propose that the brain separately represents the grammatical class of words (verbs and nouns), and that the PLTC is associated with the representation of verbs. However, to say this, one should demonstrate that the only feature of a word that modulates the activity of PLTC is its grammatical class and not its meaning (i.e. content). We propose a different choice of nouns to overcome this. Verbs and nouns are differentiated by their semantic purpose. But if the amount of visual- motion information is to be controlled and matched in these two distinct grammatical types, one should concentrate on the content and not the purpose. Thus, instead of comparing a verb such as “to run” with a noun such as “the cat”, we suggest comparing verbs with their derivate nouns. An example would be to compare “to run” (i.e. a high-motion verb) with “runner” (i.e. a high-motion noun). Alternatively, “to think”, a mental verb, should be paired with “thinker”, a derivate mental noun. Such pairing would probably lead to the control of content (i.e. motion quantity) allowing the controlled assessment of the surviving variable (i.e. grammatical class).

The case presented by Bedny et al. (2008) charters new ground and answers very pertinent questions concerning the different views on grounding cognition. It sheds new light and provides new insights concerning the way concepts are organized and retrieved. We hope that our suggestion might contribute to the better understanding of this theme.
The concept of embodiment has become a useful tool for sport scientists who use it to try to understand proficient performance and motor expertise. However, there seems to be a divide between ecological and neuroscientific approaches to... more
The concept of embodiment has become a useful tool for sport scientists who use it to try to understand proficient performance and motor expertise. However, there seems to be a divide between ecological and neuroscientific approaches to embodiment that should be accounted for in the field of sport science. An ecological approach to human behavior adopts dynamical systems tools for understanding the unfolding nature of the human cognitive processes at the level of individual-environment interactions. This approach seeks to analyze how coordinated patterns of behavior evolve over time under multiple internal and external influences. It therefore takes mind, body, and environment to be conceived as highly interactive systems. A neuroscientific approach, on the other hand, seeks to explain human behavior in view of the boundaries and possibilities of neural functioning. However, neural functioning does not operate in isolation. It is embedded in a specific environment, where internal and external influences interact. Thus, it is a mistake to think that these approaches represent different interpretations of embodiment (one in which cognition occurs beyond the brain and one in which cognition occurs within the brain). In fact, the extant gap between approaches stems from the different levels of analysis as well as from the distinct sources of knowledge employed by each contender. When scrutinizing each approach, we find that each is not only consistent with, but also significantly contributes to, strengthening the argument of the other.
Este livro pretende abordar a influência da Neuropsi-cologia no estudo da ação humana. Atualmente, as questões centrais da Psicologia do Desporto não contemplam as novas tecnologias e os novos indícios que estas tecnologias nos trazem.... more
Este livro pretende abordar a influência da Neuropsi-cologia no estudo da ação humana. Atualmente, as questões centrais da Psicologia do Desporto não contemplam as novas tecnologias e os novos indícios que estas tecnologias nos trazem. Aqui, pretendemos trazer para a mesa, dados relativos às modernas tecnologias de investigação em Psicologia do Desporto (e.g. o contributo das Neurociências e importância dos estudos hormonais), relativos às temáticas de preocupação dos tempos modernos (e.g. Adição ao Desporto e Populações Especiais); e, por fim, relativos às questões pertinentes dos nossos tempos, sustentadas por estudos neurocientíficos (e.g. os benefícios cognitivos para além do bem-estar físico). Estes são alguns dos temas que não aparecem nos manuais atuais e que, numa linguagem informal, pretendemos debater neste espaço.

" O que o corpo consegue fazer no desporto é sabido desde a antiguidade dos Jogos Olímpicos. Hoje começamos compreender como é que o consegue fazer sob o comando dos mecanismos cerebrais. Neste livro dá-se notícia destes avanços, abrindo a porta para um domínio científico que interessa desenvolver. " ALEXANDRE CASTRO CALDAS

" Este livro reveste-se de uma grande inovação no âmbito da literatura existente em Educação Física e Desporto. De fato, nas últimas décadas, a influência das Neurociências vieram dar um contributo fundamental na compreensão do estudo do movimento humano e a sua influência no desenvolvimento de competências cognitivas, emocionais e sociais. A complexidade do fenómeno abre novas portas para o ensino e investigação científica. Recomendo a leitura obrigatória desta nova publicação a todos os estudantes, professores, investigadores universitários, bem como todos os profissionais de Educação Física e Desporto. " CARLOS NETO