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Fujita, Takako; Kamio, Yoko; Yamasaki, Takao; Yasumoto, Sawa; Hirose, Shinichi; Tobimatsu, Shozo – Research in Autism Spectrum Disorders, 2013
Individuals with autism spectrum disorders (ASDs) have different automatic responses to faces than typically developing (TD) individuals. We recorded visual evoked potentials (VEPs) in 10 individuals with high-functioning ASD (HFASD) and 10 TD individuals. Visual stimuli consisted of upright and inverted faces (fearful and neutral) and objects…
Descriptors: Autism, Visual Stimuli, Social Cognition, Pervasive Developmental Disorders
Vannetzel, Leonard; Chaby, Laurence; Cautru, Fabienne; Cohen, David; Plaza, Monique – Research in Autism Spectrum Disorders, 2011
Pervasive developmental disorder not otherwise specified (PDD-NOS) represents up to two-thirds of autism spectrum disorders; however, it is usually described in terms of the symptoms not shared by autism. The study explores processing of neutral and emotional human stimuli (by auditory, visual and multimodal channels) in children with PDD-NOS (n =…
Descriptors: Stimuli, Autism, Pervasive Developmental Disorders, Children
Hellinckx, Tinneke; Roeyers, Herbert; Van Waelvelde, Hilde – Research in Autism Spectrum Disorders, 2013
During writing, perceptual, motor, and cognitive processes interact. This study explored the predictive value of several factors on handwriting quality as well as on speed in children with Autism Spectrum Disorder (ASD). Our results showed that, in this population, age, gender, and visual-motor integration significantly predicted handwriting…
Descriptors: Cognitive Processes, Reading Skills, Autism, Handwriting
Keane, Brian P.; Rosenthal, Orna; Chun, Nicole H.; Shams, Ladan – Research in Autism Spectrum Disorders, 2010
Autism involves various perceptual benefits and deficits, but it is unclear if the disorder also involves anomalous audiovisual integration. To address this issue, we compared the performance of high-functioning adults with autism and matched controls on experiments investigating the audiovisual integration of speech, spatiotemporal relations, and…
Descriptors: Autism, Comparative Analysis, Spatial Ability, Visual Perception
Parvocellular Pathway Impairment in Autism Spectrum Disorder: Evidence from Visual Evoked Potentials
Fujita, Takako; Yamasaki, Takao; Kamio, Yoko; Hirose, Shinichi; Tobimatsu, Shozo – Research in Autism Spectrum Disorders, 2011
In humans, visual information is processed via parallel channels: the parvocellular (P) pathway analyzes color and form information, whereas the magnocellular (M) stream plays an important role in motion analysis. Individuals with autism spectrum disorder (ASD) often show superior performance in processing fine detail, but impaired performance in…
Descriptors: Autism, Motion, Patients, Pervasive Developmental Disorders
Senju, Atsushi; Kikuchi, Yukiko; Akechi, Hironori; Hasegawa, Toshikazu; Tojo, Yoshikuni; Osanai, Hiroo; Johnson, Mark H. – Research in Autism Spectrum Disorders, 2011
Atypical development of face processing is a major characteristic in autism spectrum disorder (ASD), which could be due to atypical interactions between subcortical and cortical face processing. The current study investigated the saccade planning towards faces in ASD. Seventeen children with ASD and 17 typically developing (TD) children observed a…
Descriptors: Autism, Pervasive Developmental Disorders, Visual Perception, Cognitive Processes
Tsai, Chia-Liang; Pan, Chien-Yu; Wang, Chun-Hao; Tseng, Yu-Ting; Hsieh, Kai-Wen – Research in Autism Spectrum Disorders, 2011
Autism spectrum disorders (ASD) are characterized by a deficit of dorsal visual stream processing as well as the impairment of inhibitory control capability. However, the cognitive processing mechanisms of executive dysfunction have not been addressed. In the present study, the endogenous Posner paradigm task was administered to 15 children with…
Descriptors: Reaction Time, Autism, Diagnostic Tests, Inhibition
Haesen, Birgitt; Boets, Bart; Wagemans, Johan – Research in Autism Spectrum Disorders, 2011
This literature review aims to interpret behavioural and electrophysiological studies addressing auditory processing in children and adults with autism spectrum disorder (ASD). Data have been organised according to the applied methodology (behavioural versus electrophysiological studies) and according to stimulus complexity (pure versus complex…
Descriptors: Autism, Auditory Perception, Pervasive Developmental Disorders, Speech Communication
Grossman, Ruth B.; Tager-Flusberg, Helen – Research in Autism Spectrum Disorders, 2008
Studies of explicit processing of facial expressions by individuals with autism spectrum disorder (ASD) have found a variety of deficits and preserved abilities compared to their typically developing (TD) peers. However, little attention has been paid to their implicit processing abilities for emotional facial expressions. The question has also…
Descriptors: Nonverbal Communication, Autism, Adolescents, Emotional Response