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01-10-2005 | Uitgave 5/2005

Individuals with Autism Spectrum Disorder Show Normal Responses to a Fear Potential Startle Paradigm

Tijdschrift:: Journal of Autism and Developmental Disorders > Uitgave 5/2005

Auteurs:: Raphael Bernier, Geraldine Dawson, Heracles Panagiotides, Sara Webb

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The present study utilized a fear potentiated startle paradigm to examine amygdala function in individuals with autism spectrum disorder. Two competing hypotheses regarding amygdala dysfunction in autism have been proposed: (1) The amygdala is under-responsive, in which case it would be predicted that, in a fear potentiated startle experiment, individuals with autism would exhibit decreased fear conditioning and/or potentiation, and (2) The amygdala is over responsive, in which case an exaggerated potentiation of the startle response would be predicted. Fourteen adolescents and adults diagnosed with autism spectrum disorder and 14 age, gender, IQ, and anxiety level-matched typical adolescents and adults participated. Both participants with autism and typical participants potentiated the startle response following fear conditioning and no group differences in the latency or amplitude of the potentiated startle response were found. These results suggest that this aspect of amygdala function, namely fear conditioning and potentiation of the startle response, is intact in individuals with autism.

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Titel: Individuals with Autism Spectrum Disorder Show Normal Responses to a Fear Potential Startle Paradigm
Auteurs:: Raphael Bernier
Geraldine Dawson
Heracles Panagiotides
Sara Webb
Publicatiedatum: 01-10-2005
DOI: https://doi.org/10.1007/s10803-005-0002-0
Uitgeverij: Springer US
Tijdschrift: Journal of Autism and Developmental Disorders
Uitgave 5/2005
Print ISSN: 0162-3257
Elektronisch ISSN: 1573-3432

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