کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4340581 | 1295803 | 2008 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Error-specific medial cortical and subcortical activity during the stop signal task: A functional magnetic resonance imaging study
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کلمات کلیدی
ACCBOLDEPIFeedback - بازخوردNo-Go - بدون بروechoplanar imaging - تصویربرداری اکو پلانارblood oxygenation level dependent - سطح اکسیژن خون وابسته استanterior cingulate cortex - قشر سینگولیت قدامی، کورتکس سینگولیت قدامیSMA, supplementary motor area - ناحیه حرکتى تکمیلىPerformance monitoring - نظارت بر عملکردCognitive control - کنترل شناختی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The ability to detect errors and adjust behavior accordingly is essential for maneuvering in an uncertain environment. Errors are particularly prone to occur when multiple, conflicting responses are registered in a situation that requires flexible behavioral outputs. Previous studies have provided evidence indicating the importance of the medial cortical brain regions including the cingulate cortex in processing conflicting information. However, conflicting situations can be successfully resolved, or lead to errors, prompting a behavioral change in the observers. In particular, how does the brain use error signals specifically to adjust behavior on the fly? Here we employ a stop signal task (SST) to elicit errors approximately half of the time in high-conflict trials despite constant behavioral adjustment of the observers. Using functional magnetic resonance imaging, we show greater and, sequentially, less activation in the medial cortical regions when observers made an error, compared with when they successfully resolved high-conflict responses. Errors also evoked greater activity in the cuneus, retrosplenial cortex, insula, and subcortical structures including the thalamus and the region of the epithalamus (the habenula). We further showed that the error-related medial cortical activities are not correlated with post-error behavioral adjustment, as indexed by post-error slowing (PES) in go trial reaction time. These results delineate an error-specific pattern of brain activation during the SST. The results also suggest that the relationship between error-related activity and post-error behavioral adjustment may be more complicated than has been conceptualized by the conflict monitoring hypothesis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 155, Issue 4, 9 September 2008, Pages 1142-1151
Journal: Neuroscience - Volume 155, Issue 4, 9 September 2008, Pages 1142-1151
نویسندگان
C.-S.R. Li, P. Yan, H.H.-A. Chao, R. Sinha, P. Paliwal, R.T. Constable, S. Zhang, T.-W. Lee,