EEG oscillations in the gamma and alpha range respond differently to spatial frequency

被引：44
作者：
Fruend, Ingo
Busch, Niko A.
Koerner, Ursula
Schadow, Jeanette
Herrmann, Christoph S.
机构：
[1] Univ Magdeburg, Dept Biol Psychol, D-39016 Magdeburg, Germany
[2] Honda Res Inst Europe, Offenbach, Germany
来源：
VISION RESEARCH | 2007年 / 47卷 / 15期
关键词：
oscillatory brain response; visual streams; evoked potential; SFD80; TOP-DOWN FACILITATION; BRAIN ACTIVITY; BAND ACTIVITY; REACTION-TIMES; NEURONAL SYNCHRONIZATION; SELECTIVE ATTENTION; LEARNING-TASK; CORTEX; THETA; MODULATION;
D O I：
10.1016/j.visres.2007.03.022
中图分类号：
Q189 [神经科学];
学科分类号：
071006 ;
摘要：
Physical properties of visual stimuli affect electrophysiological markers of perception. One important stimulus property is spatial frequency (SF). Therefore, we studied the influence of SF on human alpha (8-13 Hz) and gamma (>30 Hz) electroencephalographic (EEG) responses in a choice reaction task. Since real world images contain multiple SFs, an SF mixture was also examined. Event related potentials were modulated by SF around 80 and 300 ms. Evoked gamma responses were strongest for the low SF and the mixture stimulus; alpha responses were strongest for high SFs. The results link evoked and induced alpha and evoked gamma responses in human EEG to different modes of stimulus processing. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2086 / 2098
页数：13
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