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ERIC Number: EJ767546
Record Type: Journal
Publication Date: 2007-Jul
Pages: 9
Abstractor: Author
ISBN: N/A
ISSN: ISSN-0162-3257
EISSN: N/A
Network Model of Decreased Context Utilization in Autism Spectrum Disorder
Beversdorf, David Q.; Narayanan, Ananth; Hillier, Ashleigh; Hughes, John D.
Journal of Autism and Developmental Disorders, v37 n6 p1040-1048 Jul 2007
Individuals with autism spectrum disorders (ASD) demonstrate impaired utilization of context, which allows for superior performance on the "false memory" task. We report the application of a simplified parallel distributed processing model of context utilization to the false memory task. For individuals without ASD, experiments support a model wherein presentation of one word, e.g., "apple," strongly activates the neighboring nodes of closely related words such as "fruit," "tree," whereas in ASD these neighboring nodes are relatively less activated. We demonstrate this model to be consistent with the superior performance on recognition testing on the false memory test, but not on free recall. This may have an anatomic basis in diminished hippocampal neuronal arborization and the abnormal minicolumnar pathology in ASD.
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A