MEMORY WITH AND WITHOUT AWARENESS - PERFORMANCE AND ELECTROPHYSIOLOGICAL EVIDENCE OF SAVINGS
MEMORY WITH AND WITHOUT AWARENESS - PERFORMANCE AND ELECTROPHYSIOLOGICAL EVIDENCE OF SAVINGS
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DOI：
10.1037/0278-7393.18.6.1270
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发表时间：
1992-11-01
影响因子：
2.6
通讯作者：
HETH, I
中科院分区：
文献类型：
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作者：
BENTIN, S;MOSCOVITCH, M;HETH, I
记录在头皮上的事件相关电位（ERP）被证明是内隐和外显记忆测试中记忆痕迹强度的敏感指标。在外显再认测试中，无论受试者是否正确地对项目进行分类，被识别为P300的正电位的幅度对于“旧”字比对于“新”字更大。然而，只有当再认记忆（d '）相对较高时，这种效应才具有统计学可靠性。与ERPs相比，外显再认的反应时对准确性敏感，而对重复性不敏感。在内隐测试中，词汇的决定，重复的话比新提出的话更快。重复效应的大小既不随自上次重复以来的时间变化，也不随先前重复的次数变化。相反，由相同的单词引起的P300对延迟和最近重复都很敏感。这表明他们受到项目的情景记忆强度的影响。
Event-related potentials (ERPs) recorded on the scalp were shown to be sensitive indicators of the strength of a memory trace on both implicit and explicit tests of memory. In explicit recognition tests, the amplitude of a positive potential identified as P300 was larger for "old" than for "new" words regardless of whether the subject categorized the items correctly. This effect, however, was statistically reliable only when the recognition memory (d') was relatively high. In contrast to ERPs, the reaction times in explicit recognition were sensitive to accuracy but not to repetition. In implicit tests, lexical decisions to repeated words were faster than to newly presented words. The magnitude of the repetition effect varied neither with elapsed time since the last repetition nor with the number of previous repetitions. In contrast, the P300 elicited by the same words were sensitive to both lag and recency of repetition. suggesting that they were influenced by the episodic memory strength of the items.