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Cue-triggered activity replay in human early visual cortex |
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| Authors: | Lu Junshi Luo Lu Wang Qian Fang Fang Chen Nihong |
| Affiliation: | 1.School of Psychological and Cognitive Sciences and Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing, 100871, China ;2.IDG/McGovern Institute for Brain Research, Peking University, Beijing, 100871, China ;3.Department of Clinical Neuropsychology, Sanbo Brain Hospital, Capital Medical University, Beijing, 100093, China ;4.Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China ;5.Department of Psychology, School of Social Sciences, Tsinghua University, Beijing, 100084, China ;6.IDG/McGovern Institute for Brain Research, Tsinghua University, Beijing, 100084, China ; |
| Abstract: | The recall of learned temporal sequences by a visual cue is an important form of experience-based neural plasticity. Here we observed such reactivation in awake human visual cortex using intracranial recording. After repeated exposure to a moving dot, a flash of the dot was able to trigger neural reactivation in the downstream receptive field along the motion path. This effect was observed only when the cue appeared near the receptive field. The estimated traveling speed was faster compared to the activation induced by the real motion. We suggest a range-limited, time-compressed reactivation as a result of repeated visual exposure in awake human visual cortex. |
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