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Valence scaling of dynamic facial expressions is altered in high-functioning subjects with autism spectrum disorders: an fMRI study

FMRI was performed with the dynamic facial expressions fear and happiness. This was done to detect differences in valence processing between 25 subjects with autism spectrum disorders (ASDs) and 27 typically developing controls. Valence scaling was abnormal in ASDs. Positive valence induces lower de...

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Bibliographic Details
Main Authors: Rahko, Jukka (Author) , Bölte, Sven (Author)
Format: Article (Journal)
Language:English
Published: 6 August 2011
In: Journal of autism and developmental disorders
Year: 2011, Volume: 42, Issue: 6, Pages: 1011-1024
ISSN:1573-3432
Online Access: Get full text
Author Notes:Jukka S. Rahko, Jyri-Johan Paakki, Tuomo H. Starck, Juha Nikkinen, David L. Pauls, Jari V. Kätsyri, Eira M. Jansson-Verkasalo, Alice S. Carter, Tuula M. Hurtig, Marja-Leena Mattila, Katja K. Jussila, Jukka J. Remes, Sanna A. Kuusikko-Gauffin, Mikko E. Sams, Sven Bölte, Hanna E. Ebeling, Irma K. Moilanen, Osmo Tervonen, Vesa Kiviniemi
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Summary:FMRI was performed with the dynamic facial expressions fear and happiness. This was done to detect differences in valence processing between 25 subjects with autism spectrum disorders (ASDs) and 27 typically developing controls. Valence scaling was abnormal in ASDs. Positive valence induces lower deactivation and abnormally strong activity in ASD in multiple regions. Negative valence increased deactivation in visual areas in subjects with ASDs. The most marked differences between valences focus on fronto-insular and temporal regions. This supports the idea that subjects with ASDs may have difficulty in passive processing of the salience and mirroring of expressions. When the valence scaling of brain activity fails, in contrast to controls, these areas activate and/or deactivate inappropriately during facial stimuli presented dynamically.
Item Description:Gesehen am 17.05.2018
Physical Description:Online Resource
ISSN:1573-3432

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