| Autor: |
Todd, Jessica, Mills, Charlotte, Wilson, AndrewD., Plumb, MandyS., Mon-Williams, MarkA. |
| Předmět: |
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| Zdroj: |
Journal of Motor Behavior; Oct2009, Vol. 41 Issue 5, p419-426, 8p, 2 Diagrams, 1 Chart, 3 Graphs |
| Abstrakt: |
The authors studied 2 tasks that placed differing demands on detecting relevant visual information and generating appropriate gaze shifts in adults and children with and without autism. In Experiment 1, participants fixated a cross and needed to make large gaze shifts, but researchers provided explicit instructions about shifting. Children with autism were indistinguishable from comparison groups in this top-down task. In Experiment 2 (bottom-up), a fixation cross remained or was removed prior to the presentation of a peripheral target of low visual salience. In this gap–effect experiment, children with autism showed lengthened reaction times overall but no specific deficit in overlap trials. The results show evidence of a general deficit in manual responses to visual stimuli of low salience and no evidence of a deficit in top-down attention shifting. Older children with autism appeared able to generate appropriate motor responses, but stimulus-driven visual attention seemed impaired. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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