کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10466854 | 925784 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Stress modulation of visuomotor binding
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The primate cortex represents perceived and produced events in a distributed way, which calls for a mechanism that integrates their features into coherent structures. Animal, drug, and patient studies suggest that the local binding of visual features is under muscarinic-cholinergic control, whereas visuomotor binding seems to be driven by dopaminergic pathways. Consistent with this picture, we present evidence that the binding of visual features and actions is modulated by stress, induced by the cold pressure test (CPT), which causes an excessive dopamine turnover in prefrontal cortex. The impact of stress was restricted to the task-relevant visuomotor binding, supporting claims that dopamine affects the maintenance of task-relevant information in working memory. The outcome pattern, including the impact of the personality trait extraversion, suggests that the relation between dopamine level and visuomotor performance follows an inverted U-shaped function, with strongest binding being associated with average dopamine levels.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuropsychologia - Volume 46, Issue 5, 2008, Pages 1542-1548
Journal: Neuropsychologia - Volume 46, Issue 5, 2008, Pages 1542-1548
نویسندگان
Lorenza S. Colzato, Wouter Kool, Bernhard Hommel,