Weyerts H, Tendolkar I, Smid H G, Heinze H J
Department of Clinical Neurophysiology, University of Magdeburg, Germany.
Neuroreport. 1997 May 6;8(7):1583-8. doi: 10.1097/00001756-199705060-00007.
EVENT-RELATED potentials were obtained during study and recognition of word pairs in an incidental learning paradigm. Word pairs were studied either by performing a semantic judgment separately for each word (non-associative encoding) or by creating a semantic association between the two words (associative encoding). Only word pairs encoded associatively elicited a reliable dm-effect with a right frontal maximum. Recognition of previously studied word pairs revealed two topographically and temporally distinct old/new effects: an earlier parietal effect which was only reliable for associatively encoded items and a right frontal effect which was of equal magnitude for word pairs from both encoding tasks. The findings suggest that ERP effects of distinct memory processes are differentially influenced by the encoding instructions.
在一个偶然学习范式中，研究和识别单词对时获得了事件相关电位。通过对每个单词分别进行语义判断（非联想编码）或通过在两个单词之间建立语义关联（联想编码）来研究单词对。只有通过联想编码的单词对才会在右额叶最大值处引发可靠的差异负波效应。对先前研究过的单词对的识别揭示了两种在地形和时间上不同的新旧效应：一种较早的顶叶效应，仅对联想编码的项目可靠；另一种右额叶效应，对于来自两种编码任务的单词对大小相同。研究结果表明，不同记忆过程的ERP效应受到编码指令的不同影响。
