Frontal evoked γ activity modulates behavioural performance in Autism Spectrum Disorders in a perceptual simultaneity task
Autism spectrum disorders (ASDs) are associated with anomalies in time perception. In a perceptual simultaneity task, individuals with ASD demonstrate superior performance compared to typically developing (TD) controls. γ-activity, a robust marker of visual processing, is reportedly altered in ASD i...
| Príomhchruthaitheoirí: | , , , |
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| Formáid: | Journal article |
| Foilsithe / Cruthaithe: |
Elsevier
2017
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| _version_ | 1826304630248701952 |
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| author | Menassa, DA Braeutigam, S Bailey, A Falter-Wagner, CM |
| author_facet | Menassa, DA Braeutigam, S Bailey, A Falter-Wagner, CM |
| author_sort | Menassa, DA |
| collection | OXFORD |
| description | Autism spectrum disorders (ASDs) are associated with anomalies in time perception. In a perceptual simultaneity task, individuals with ASD demonstrate superior performance compared to typically developing (TD) controls. γ-activity, a robust marker of visual processing, is reportedly altered in ASD in response to a wide variety of tasks and these differences may be related to superior performance in perceptual simultaneity. Using time-frequency analysis, we assessed evoked γ-band phase-locking in magnetoencephalographic recordings of 16 ASD individuals and 17 age-matched TD controls. Individuals judged whether presented visual stimuli were simultaneous or asynchronous. We identified left frontal γ-activity in ASD, which was associated with a reduced perception of simultaneity. Where feature binding was observed at a neurophysiological level in parieto-occipital cortices in ASD in apparent simultaneity (asynchronous stimuli with short delay between them), this did not predict the correct behavioural outcome. These findings suggest distinct γ profiles in ASD associated with the perception of simultaneity. |
| first_indexed | 2024-03-07T06:20:43Z |
| format | Journal article |
| id | oxford-uuid:f2a16732-2e6e-4b67-9eea-343cc54a52a3 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T06:20:43Z |
| publishDate | 2017 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:f2a16732-2e6e-4b67-9eea-343cc54a52a32022-03-27T12:05:20ZFrontal evoked γ activity modulates behavioural performance in Autism Spectrum Disorders in a perceptual simultaneity taskJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:f2a16732-2e6e-4b67-9eea-343cc54a52a3Symplectic Elements at OxfordElsevier2017Menassa, DABraeutigam, SBailey, AFalter-Wagner, CMAutism spectrum disorders (ASDs) are associated with anomalies in time perception. In a perceptual simultaneity task, individuals with ASD demonstrate superior performance compared to typically developing (TD) controls. γ-activity, a robust marker of visual processing, is reportedly altered in ASD in response to a wide variety of tasks and these differences may be related to superior performance in perceptual simultaneity. Using time-frequency analysis, we assessed evoked γ-band phase-locking in magnetoencephalographic recordings of 16 ASD individuals and 17 age-matched TD controls. Individuals judged whether presented visual stimuli were simultaneous or asynchronous. We identified left frontal γ-activity in ASD, which was associated with a reduced perception of simultaneity. Where feature binding was observed at a neurophysiological level in parieto-occipital cortices in ASD in apparent simultaneity (asynchronous stimuli with short delay between them), this did not predict the correct behavioural outcome. These findings suggest distinct γ profiles in ASD associated with the perception of simultaneity. |
| spellingShingle | Menassa, DA Braeutigam, S Bailey, A Falter-Wagner, CM Frontal evoked γ activity modulates behavioural performance in Autism Spectrum Disorders in a perceptual simultaneity task |
| title | Frontal evoked γ activity modulates behavioural performance in Autism Spectrum Disorders in a perceptual simultaneity task |
| title_full | Frontal evoked γ activity modulates behavioural performance in Autism Spectrum Disorders in a perceptual simultaneity task |
| title_fullStr | Frontal evoked γ activity modulates behavioural performance in Autism Spectrum Disorders in a perceptual simultaneity task |
| title_full_unstemmed | Frontal evoked γ activity modulates behavioural performance in Autism Spectrum Disorders in a perceptual simultaneity task |
| title_short | Frontal evoked γ activity modulates behavioural performance in Autism Spectrum Disorders in a perceptual simultaneity task |
| title_sort | frontal evoked γ activity modulates behavioural performance in autism spectrum disorders in a perceptual simultaneity task |
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