کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6278065 | 1295791 | 2008 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Response preparation and inhibition: The role of the cortical sensorimotor beta rhythm
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کلمات کلیدی
LFPMotor preparation - آماده سازی موتورmovement execution - اعدام جنبشERP - برنامه ریزی منابع سازمانResponse time - زمان پاسخprimary somatosensory cortex - قشر اسموتیسنسوری اولیهprimary motor cortex - قشر حرکتی اولیهResponse inhibition - مهار پاسخneural oscillations - نوسانات عصبیlocal field potential - پتانسیل منطقه ایEvent-related potential - پتانسیل وابسته به رویداد
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Paradigms requiring either a GO or a NO-GO response are often used to study the neural mechanisms of response inhibition. Here this issue is examined from the perspective of event-related beta (14-30 Hz) oscillatory activity. Two macaque monkeys performed a task that began with a self-initiated lever depression and maintenance (sustained motor output) and required a visual pattern discrimination followed by either a lever release (GO) or continued lever-holding (NO-GO) response. Analyzing simultaneous local field potentials (LFPs) from primary somatosensory, frontal motor, and posterior parietal cortices, we report two results. First, beta oscillation desynchronized shortly after stimulus presentation, the onset of which was approximately the same for both the GO and NO-GO conditions (â¼110 ms). Since it is well known that beta desynchronization is a reliable indicator of movement preparation, this result suggests that early motor preparation took place in both conditions. Second, following the GO/NO-GO decision (â¼190 ms), beta activity rebounded significantly (â¼300 ms) only in the NO-GO condition. Coherence and Granger causality measures revealed that the dynamical organization of the rebounded beta network was similar to that existing during the sustained motor output prior to stimulus onset. This finding suggests that response inhibition led to the restoration of the sensorimotor network to its prestimulus state.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 156, Issue 1, 22 September 2008, Pages 238-246
Journal: Neuroscience - Volume 156, Issue 1, 22 September 2008, Pages 238-246
نویسندگان
Y. Zhang, Y. Chen, S.L. Bressler, M. Ding,