Magnetoencephalographic recording of steady-state visual evoked cortical activity

被引:92
|
作者
Muller, MM [1 ]
Teder, W [1 ]
Hillyard, SA [1 ]
机构
[1] UNIV CALIF SAN DIEGO,DEPT NEUROSCI,LA JOLLA,CA 92093
关键词
magnetoencephalography; steady-state visual evoked response; visual cortex;
D O I
10.1007/BF01190385
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Steady-state visual evoked magnetic fields (SSVEFs) were recorded in response to a flickering light source using a 37-channel magnetometer. The SSVEF had a sinusoidal waveform having the same fundamental frequency as the driving stimulus, which was either 6.0 Hz, 11.9 Hz, or 15.2 Hz. SSVEF topographies at each frequency had a dipoloar form over the posterior head that could well-modelled by single equivalent current dipoles. The best-fit dipoles were localized in posterior occipital cortex for the SSVEFs to 6.0 and 11.9 Hz stimuli and in more anterior and ventromedial occipital cortex for the 15.2 Hz SSVEP.
引用
收藏
页码:163 / 168
页数:6
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