Linguistic and Non-Linguistic Semantic Processing in Individuals with Autism Spectrum Disorders: An ERP Study
Saved in:
| Title: | Linguistic and Non-Linguistic Semantic Processing in Individuals with Autism Spectrum Disorders: An ERP Study |
|---|---|
| Language: | English |
| Authors: | Coderre, Emily L., Chernenok, Mariya, Gordon, Barry, Ledoux, Kerry |
| Source: | Journal of Autism and Developmental Disorders. Mar 2017 47(3):795-812. |
| Availability: | Springer. 233 Spring Street, New York, NY 10013. Tel: 800-777-4643; Tel: 212-460-1500; Fax: 212-348-4505; e-mail: service-ny@springer.com; Web site: http://www.springerlink.com |
| Peer Reviewed: | Y |
| Page Count: | 18 |
| Publication Date: | 2017 |
| Document Type: | Journal Articles Reports - Research |
| Descriptors: | Autism, Pervasive Developmental Disorders, Language Impairments, Semantics, Cognitive Processes, Prompting, Brain, Visual Stimuli |
| DOI: | 10.1007/s10803-016-2985-0 |
| ISSN: | 0162-3257 |
| Abstract: | Individuals with autism spectrum disorders (ASD) experience difficulties with language, particularly higher-level functions like semantic integration. Yet some studies indicate that semantic processing of non-linguistic stimuli is not impaired, suggesting a language-specific deficit in semantic processing. Using a semantic priming task, we compared event-related potentials (ERPs) in response to lexico-semantic processing (written words) and visuo-semantic processing (pictures) in adults with ASD and adults with typical development (TD). The ASD group showed successful lexico-semantic and visuo-semantic processing, indicated by similar N400 effects between groups for word and picture stimuli. However, differences in N400 latency and topography in word conditions suggested different lexico-semantic processing mechanisms: an expectancy-based strategy for the TD group but a controlled post-lexical integration strategy for the ASD group. |
| Abstractor: | As Provided |
| Number of References: | 59 |
| Entry Date: | 2017 |
| Accession Number: | EJ1133701 |
| Database: | ERIC |
| Abstract: | Individuals with autism spectrum disorders (ASD) experience difficulties with language, particularly higher-level functions like semantic integration. Yet some studies indicate that semantic processing of non-linguistic stimuli is not impaired, suggesting a language-specific deficit in semantic processing. Using a semantic priming task, we compared event-related potentials (ERPs) in response to lexico-semantic processing (written words) and visuo-semantic processing (pictures) in adults with ASD and adults with typical development (TD). The ASD group showed successful lexico-semantic and visuo-semantic processing, indicated by similar N400 effects between groups for word and picture stimuli. However, differences in N400 latency and topography in word conditions suggested different lexico-semantic processing mechanisms: an expectancy-based strategy for the TD group but a controlled post-lexical integration strategy for the ASD group. |
|---|---|
| ISSN: | 0162-3257 |
| DOI: | 10.1007/s10803-016-2985-0 |
