THE CONTRIBUTION OF TASK-RELATED FACTORS TO ERP REPETITION EFFECTS AT SHORT AND LONG LAGS
THE CONTRIBUTION OF TASK-RELATED FACTORS TO ERP REPETITION EFFECTS AT SHORT AND LONG LAGS
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DOI：
10.3758/bf03197125
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发表时间：
1990-07-01
影响因子：
2.4
通讯作者：
PELED, BS
中科院分区：
文献类型：
--
作者：
BENTIN, S;PELED, BS
事件相关电位（ERP）被用来评估任务相关的决策过程的相对贡献的重复效应在滞后0和15。记录了16名受试者在两项任务中的电生理活动。任务A要求词汇决策：受试者被指示默默地计数不经常出现的非单词列表中的单词和非单词。任务B是一项识别记忆任务，分为四个模块，要求受试者区分每个模块中的旧探测器和新探测器。显著的ERP重复效应，相当于在两个任务中，被发现在滞后0。相比之下，在滞后15，重复效应是显着的，只有在任务A。这些结果表明，ERPs是敏感的，主要是poststimulus识别源的重复效应，如恢复情节痕迹有关的刺激分类和决策过程。
Event-related potentials (ERPs) were used to assess the relative contribution of task-related decision-making processes to the repetition effects at Lags 0 and 15. Electrophysiological activity was recorded from 16 subjects in two tasks. Task A required a lexical decision: subjects were instructed to silently count infrequently occurring nonwords in a list of words and nonwords. Task B, a recognition memory task presented in four blocks, required subjects to distinguish between old and new probes in each block. Significant ERP repetition effects, equivalent in both tasks, were found at Lag 0. In contrast, at Lag 15, the repetition effect was significant only in Task A. These results suggest that ERPs are sensitive primarily to poststimulus-identification sources of the repetition effect, such as the recovery of episodic traces related to stimulus-categorization and decision-making processes.