摘要
目的探讨认知方式对老年人完成前瞻记忆任务的影响。方法运用镶嵌图形测验和简易智力状况检查(MMSE)问卷筛选出认知能力无显著差异的场独立和场依存的老年被试者,并采用两种双任务及事件相关电位(ERPS)技术对其进行探讨。结果在图片任务中,两者的行为数据无显著差异;但在stroop任务中,场独立老年被试者的反应时成绩优于场依存被试者(t=-2.532,P=0.02)。这种差异在ERPs上主要体现为两组前瞻记忆任务线索出现后的270~320 ms(图片任务)和400~600 ms(stroop任务)的脑电图有显著差异。结论在靶线索发现前后,不同认知风格老年人均表现了出显著的差异。
引文
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