视觉辨别能力与阿尔法波幅降低但锁相增加有关。
Visual discrimination performance is related to decreased alpha amplitude but increased phase locking.
作者信息
Hanslmayr Simon, Klimesch Wolfgang, Sauseng Paul, Gruber Walter, Doppelmayr Michael, Freunberger Roman, Pecherstorfer Thomas
机构信息
Department of Physiological Psychology, Institute of Psychology, University of Salzburg, Hellbrunnerstr. 34, A-5020 Salzburg, Austria.
出版信息
Neurosci Lett. 2005 Feb 25;375(1):64-8. doi: 10.1016/j.neulet.2004.10.092. Epub 2004 Nov 30.
This study investigated the question whether good and bad performance in a visual discrimination task is related to resting alpha power in a different way as it is known from memory tasks. The results show that good perceptual but not memory performance is related to low alpha amplitudes. In addition, we found that large phase resetting in the alpha band, and enhanced early components in the ERP are related to good performance in the discrimination task. The conclusion of this study is that in contrast to memory performance which is related to large resting alpha activity low alpha amplitudes are an indicator for good perceptual performance.
本研究探讨了视觉辨别任务中的良好和不良表现是否与静息阿尔法功率存在与记忆任务中已知情况不同的关联方式这一问题。结果表明，良好的感知表现而非记忆表现与低阿尔法波幅相关。此外，我们发现阿尔法波段的大幅相位重置以及事件相关电位中增强的早期成分与辨别任务中的良好表现相关。本研究的结论是，与与较大静息阿尔法活动相关的记忆表现不同，低阿尔法波幅是良好感知表现的一个指标。
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