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01-06-2012 | Original Paper

Valence Scaling of Dynamic Facial Expressions is Altered in High-Functioning Subjects with Autism Spectrum Disorders: an fMRI Study

Auteurs: 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

Gepubliceerd in: Journal of Autism and Developmental Disorders | Uitgave 6/2012

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Abstract

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.
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Metagegevens
Titel
Valence Scaling of Dynamic Facial Expressions is Altered in High-Functioning Subjects with Autism Spectrum Disorders: an fMRI Study
Auteurs
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
Publicatiedatum
01-06-2012
Uitgeverij
Springer US
Gepubliceerd in
Journal of Autism and Developmental Disorders / Uitgave 6/2012
Print ISSN: 0162-3257
Elektronisch ISSN: 1573-3432
DOI
https://doi.org/10.1007/s10803-011-1332-8