【摘 要】
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Objective Working memory is divided into separable subsystems, spatial working memory and verbal working memory involving manipulation and retention ofvisuospatial and verbal information respectively.
【机 构】
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Key Laboratory of Child Development and Learning Science (Southeast University), Ministry of Educati
【出 处】
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中国神经科学学会第九届全国学术会议暨第五届会员代表大会
论文部分内容阅读
Objective Working memory is divided into separable subsystems, spatial working memory and verbal working memory involving manipulation and retention ofvisuospatial and verbal information respectively.The present study is to assess the influences of positive emotion on spatial and verbal working memory.Methods We applied the modified DMS paradigm ("picture-target-delay-probe" 4 stages for an experimental unit) with the positive and neutral picture from the International Affective Picture System (IAPS; Lang, Bradley & Cuthbert, 1999), using ERP technology in healthy undergraduates.Results (a) Positive emotion impairs low load spatial working memory task, not high load, which is revealed by the lower P3 and slow wave in the maintaining phase, and the higher of early LPP, late LPP, and slow wave in the matching phase in the low load spatial working memory task.(b) Positive emotion in a certain extent facilitates both high and low load verbal working memory, which is revealed by the shorter task reaction time, and the higher mean amplitude of P2 in the decoding phase, the higher P3 and slow wave in the maintaining phase, and the lower LPP in the matching phase.These ERP components respectively reflected attention allocation, attention maintenance, and executive control processes of working memory.Conclusion This research finds the selective effects of positive emotion on working memory, and the interaction with working memory task load, which could primarily demonstrate the potential mechanism of how positive emotion affects working memory.
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