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青老年组不同难度下心算活动的脑功能磁共振成像研究
Authors
刘昌
李德明
+3 more
李恩中
翁旭初
马林
Publication date
1 January 2005
Publisher
Abstract
应用功能磁共振成像技术研究不同心算难度下脑区的活动以及年龄的影响。14名志愿者(20~29岁青年和60~69岁老年被试各7名)参加了该实验。实验任务为2个难度水平的连续减法心算,分别为1000-3和1000-17。结果表明:(1)心算加工激活了额叶和顶叶的许多脑区; (2)大脑左半球是心算加工的优势半球,但随着心算难度加大,大脑一侧化程度下降,而年老加剧了这一趋势; (3)青年组进行简单心算(1000-3)时,额中回未见明显激活,而老年组进行简单心算时,该脑区被明显激活。总体上,额叶和顶叶在心算活动中起着重要作用,而任务难度和年龄对心算加工时脑活动的影响以额中回区最为明显
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Institutional Repository of Institute of Psychology, Chinese Academy of Sciences
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Last time updated on 30/04/2021