Timing of activity in early visual cortex as revealed by transcranial magnetic stimulation
Timing of activity in early visual cortex as revealed by transcranial magnetic stimulation
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DOI：
10.1097/00001756-199908200-00035
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发表时间：
1999-08-20
期刊：
影响因子：
1.7
通讯作者：
Cowey, A
中科院分区：
文献类型：
--
作者：
Corthout, E;Uttl, B;Cowey, A
为了确定早期视觉皮层的视觉处理时间，我们对健康受试者的枕极进行了单脉冲经颅磁刺激，同时他们进行了强迫选择视觉字母识别任务。我们发现了两个独立的活动期，第一个范围从20至60毫秒后的视觉刺激的发病，和第二个范围从100至140毫秒后的视觉刺激的发病。我们认为，这两个时期反映了必要的活动，在V1，之前和之后重新进入。(C)1999年利平科特威廉姆斯&威尔金斯。
To determine the timing of visual processing in the early visual cortex, we applied single pulse transcranial magnetic stimulation to the occipital pole of healthy subjects while they were engaged in a forced-choice visual letter-identification task. We found two separate periods of activity, the first ranging from 20 to 60 ms after the onset of the visual stimulus, and the second ranging from 100 to 140 ms after the onset of the visual stimulus. We suggest that these two periods reflect necessary activity in V1, before and after re-entry. (C) 1999 Lippincott Williams & Wilkins.