کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5737349 | 1614714 | 2017 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Neural correlates of visuo-tactile crossmodal paired-associate learning and memory in humans
ترجمه فارسی عنوان
همبستگی های عصبی در یادگیری و یادگیری متقابل ویسو-لمسی در انسان
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کلمات کلیدی
EOGUIILPNVisuo-tactileCrossmodalCIICNVLPCSOAElectroencephalogram - الکتروانسفالوگرافیelectro-oculogram - الکتریک oculogramERP - برنامه ریزی منابع سازمانanalysis of variance - تحلیل واریانسANOVA - تحلیل واریانس Analysis of variancefunctional magnetic resonance imaging - تصویرسازی تشدید مغناطیسی کارکردیfMRI - تصویرسازی تشدید مغناطیسی کارکردیContingent negative variation - تنوع منفی احتمالیWorking memory - حافظه فعال یا حافظه کاریreaction time - زمان واکنشlate positive component - قطعه قطعه مثبتstimulus onset asynchrony - محرک شروع ناهماهنگیregion(s) of interest - منطقه (های) مورد علاقهEEG - نوار مغزیPaired-associate learning - یادگیری مرتبط با همکار
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
چکیده انگلیسی
Studies have indicated that a cortical sensory system is capable of processing information from different sensory modalities. However, it still remains unclear when and how a cortical system integrates and retains information across sensory modalities during learning. Here we investigated the neural dynamics underlying crossmodal associations and memory by recording event-related potentials (ERPs) when human participants performed visuo-tactile (crossmodal) and visuo-visual (unimodal) paired-associate (PA) learning tasks. In a trial of the tasks, the participants were required to explore and learn the relationship (paired or non-paired) between two successive stimuli. EEG recordings revealed dynamic ERP changes during participants' learning of paired-associations. Specifically, (1) the frontal N400 component showed learning-related changes in both unimodal and crossmodal tasks but did not show any significant difference between these two tasks, while the central P400 displayed both learning changes and task differences; (2) a late posterior negative slow wave (LPN) showed the learning effect only in the crossmodal task; (3) alpha-band oscillations appeared to be involved in crossmodal working memory. Additional behavioral experiments suggested that these ERP components were not relevant to the participants' familiarity with stimuli per se. Further, by shortening the delay length (from 1300Â ms to 400Â ms or 200 ms) between the first and second stimulus in the crossmodal task, declines in participants' task performance were observed accordingly. Taken together, these results provide insights into the cortical plasticity (induced by PA learning) of neural networks involved in crossmodal associations in working memory.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 362, 24 October 2017, Pages 181-195
Journal: Neuroscience - Volume 362, 24 October 2017, Pages 181-195
نویسندگان
Peng Gui, Yixuan Ku, Lei Li, Xiaojin Li, Mark Bodner, Fred A. Lenz, Liping Wang, Yong-Di Zhou,