Abstract Our facial expressions give others the opportunity to access our feelings, and constitute an important nonverbal tool for communication. Many recent studies have investigated emotional perception in adults, knowledge of neural processes involved emotions is increasingly precise. Young children also use faces express their internal states perceive others, but little known about neurodevelopment expression recognition. The goal current study was determine normal development emotion...

Abstract Atypical sensory behaviours represent a core symptom of autism spectrum disorder (ASD). Investigating early visual processing is crucial to deepen our understanding higher-level processes. Visual evoked potentials (VEPs) pattern-reversal checkerboards were recorded in ASD children and age-matched controls. Peak analysis the P100 component two types single-trial analyses carried out. amplitude was reduced group, consistent with previous reports. The proportion trials positive...

Detection of changes in facial emotional expressions is crucial to communicate and rapidly automatically process possible threats the environment. Recent studies suggest that expression-related visual mismatch negativity (vMMN) reflects automatic processing changes. In present study we used a controlled paradigm investigate specificity change-detection. order disentangle specific responses deviants from neutral deviants, presented expression as standard stimulus (p = 0.80) both angry 0.10,...

Recent evidence suggests that disruption of integrative processes in sensation and perception may play a critical role cognitive behavioural atypicalities characteristic ASD. In line with this, ASD is associated altered structural functional brain connectivity atypical patterns inter-regional communication which have been proposed to contribute difficulties prevalent this group. The present MEG study used atlas-guided source space analysis phase synchronization participants, as well matched...

Categorization is a basic means of organizing the world around us and offers simple way to process mass stimuli one perceives every day. The ability categorize appears early in infancy, has important ramifications for acquisition other cognitive capacities, but little known its development during childhood. We studied 48 children (7–15 years age) 14 adults using an animal/nonanimal visual categorization task while event‐related potentials (ERPs) were recorded. Three components measured: P1,...

A relative indifference to the human voice is a characteristic of Autism Spectrum Disorder (ASD). Yet, studies perception in ASD provided contradictory results: one study described an absence preferential response voices while another reported larger activation vocal sounds than environmental sounds, as seen typically developed (TD) adults. In children with ASD, was attributed atypical sounds. To have better understanding these contradictions, we re-analyzed data from sixteen and age-matched...

Processing information from faces is crucial to understanding others and adapting social life. Many studies have investigated responses facial emotions provide a better of the processes neural networks involved. Moreover, several revealed abnormalities emotional face processing their correlates in affective disorders. The aim this study was investigate whether early visual event-related potentials (ERPs) are affected by skills healthy adults. Unfamiliar expressing six basic were presented 28...

Abstract Although the wide neural network and specific processes related to faces have been revealed, process by which face‐processing ability develops remains unclear. An interest in appears early infancy, developmental findings date suggested a long maturation of mechanisms involved face processing. These changes may be supported acquisition more efficient strategies (theory expertise) identified adults. This study aimed clarify link between event‐related potential ( ERP ) development...

Atypical visual exploration of both social and nonsocial scenes is often reported in Autism Spectrum Disorder (ASD) with less precise longer saccades, potentially reflecting difficulties oculomotor control. To assess a subset functions ASD, 20 children ASD 21 age‐matched typically developing (TD) (2.6–11.5 years) partook three tasks increasing complexity, while no explicit instruction was provided: prosaccade gap task, color “categorical” search (a face among butterflies vice‐versa). In...

Unusual behaviors and brain activity to socio-emotional stimuli have been reported in Autism Spectrum Disorder (ASD). Atypical reactivity change intolerance of uncertainty are also present, but little is known on their possible impact facial expression processing autism. The visual mismatch negativity (vMMN) an electrophysiological response automatically elicited by changing events such as deviant emotional faces presented among regular neutral faces. While vMMN has found altered ASD...

Abstract Detection of changes in facial emotions is crucial to communicate and rapidly process threats the environment. This function develops throughout childhood via modulations earliest brain responses, such as P100 N170 recorded using electroencephalography. Automatic signatures can be measured through expression‐related visual mismatch negativity (vMMN), which reflects processing unattended changes. While increasing research has investigated vMMN adults, few studies have been conducted...

<h3>Background/aims</h3> New surgical techniques have recently been developed in order to compensate for visual impairment and improve comfort patients with presbyopia. However, the results are still variable, depending on correction modality used and/or patient. The main purpose of this study was identify predictive electrophysiological markers postcorrection <h3>Methods</h3> Thirteen presbyopia (aged between 45 60 years) received successive randomised compensation contact lenses supplying...

Visual skills, including numerosity estimation are reported to be superior in autism spectrum disorders (ASD). This phenomenon is attributed individuals with ASD processing local features, rather than the Gestalt. We examined neural correlates of adults and without ASD, disentangle perceptual atypicalities from processing. Fourteen matched typically developed (TD) controls estimated number dots (80-150) arranged either randomly (local information) or meaningful patterns (global while brain...

Autism is a severe neurodevelopmental disorder characterized by early manifestations of social difficulties and atypical sensory-based behaviors. As faces are essential for interaction, they have been widely investigated in autism, revealing disruptions face processing. Cognitive theories argue that people with autism process the world differently, showing processing bias local information. However, literature currently neglects mental representation faces, or concept, ASD. The current study...