图 书 馆
均衡的空间工作记忆Balanced spatial working memory |
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| 课程网址: | http://videolectures.net/eccs08_hansel_bswm/ |
| 主讲教师: | David Hansel |
| 开课单位: | 勒内·笛卡尔大学 |
| 开课时间: | 2008-10-17 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | Neural activity persisting for several seconds is thought to be the neural correlate of working memory in cortex. It was found recently that during persistent activity spike trains are highly irregular, even more irregular than in spontaneous activity. We show that this apparently innocuous feature raises a fundamental difficulty if one holds that neuronal nonlinearities combined with recurrent excitation underly activity persistence as usually assumed. Instead, we argue that the key nonlinearities involved are synaptic and not neuronal. We assess this proposal in the framework of a network model representing a circuit in prefrontal cortex involved in spatial working memory. This lead us to suggest that short term plasticity recently discovered in synapses made by pyramidal cells in prefrontal cortex is crucial in spatial working memory. |
| 关 键 词: | 神经活动; 不规则的自发活动; 非线性神经元; 空间工作记忆 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2020-10-14：yumf |
| 阅读次数: | 42 |