Practice-Related Effects in a Go-Nogo Task
Practice-Related Effects in a Go-Nogo Task
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Go-Nogo 任务中与练习相关的效果
DOI：
10.2466/pms.105.4.1275-1288
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发表时间：
2007
影响因子：
1.6
通讯作者：
B. Griefahn
中科院分区：
文献类型：
--
作者：
S. A. Schapkin;M. Falkenstein;A. Marks;B. Griefahn
将传入刺激与记忆模板进行比较以及对不相关反应表示的抑制假设这些是受实践不同影响的可分离过程。在视觉 Go-Nogo 任务中研究了练习效果，该任务包含与反应兼容或不兼容的刺激。八名参与者（19-28 岁，M = 23.3，SD = 3.6）在连续三周（周末除外）的每天早晨执行同步脑电图记录的任务。分析了短期、长期以及工作日的影响。作为短期效果，误报率变小了；伴随着事件相关电位（ERP）额叶 N2 部分的增强。作为长期效果，观察到围棋试验中对不相容刺激的反应时间缩短和眨眼频率增加。在 N2 的两个子组件中，可以区分早期 (N2e) 和晚期 (N2l)。 N2e 和 N2l 随着实验操作的不同而变化。首先，它们表现出不同的刺激相容性效果。其次，无论试验类型如何，N2e 都会随着练习而增强，而 N2l 的与练习相关的增加仅在 Nogo 试验中获得。第三，练习相关的对成分的影响因头皮地形而异。结果表明，N2e 反映了比较过程，而 N2l 反映了对不相关反应表示的抑制。这两个过程都通过实践得到改进。
Comparison of an incoming stimulus with a memory template and the inhibition of an irrelevant response representation assumes these are separable processes differently affected by practice. Practice effects were studied in a visual Go-Nogo task which contained stimuli either compatible or incompatible with a response. Eight participants (19–28 years old, M = 23.3, SD = 3.6) performed the task with simultaneous EEG recording every morning during three consecutive weeks except weekends. Short-term, long-term, as well as weekday effects were analyzed. As a short-term effect, the false alarm rate became smaller; this was accompanied by an enhancement of the frontal N2 component of the event-related potential (ERP). As a long-term effect, the shortening of reaction time to incompatible stimuli and increase of the blink rate for Go trials was observed. Within the N2 two subcomponents, the early (N2e) and late (N2l) could be distinguished. N2e and N2l varied differently with the experimental manipulations. First, they showed different effects of stimulus compatibility. Second, the N2e was enhanced with practice irrespective of trial type, while the practice-related increase of the N2l was obtained for Nogo trials only. Third, the practice-related effects on components differed in scalp topography. The results suggest N2e reflects the comparison process and N2l the inhibition of an irrelevant response representation. Both processes improved with practice.
DOI：
10.1016/0013-4694(85)91017-x
发表时间：
1985-01-01
期刊：
ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY
影响因子：
--
作者：
PFEFFERBAUM, A;FORD, JM;KOPELL, BS
通讯作者：
KOPELL, BS