Internally generated cell assembly sequences in the rat hippocampus.

Internally generated cell assembly sequences in the rat hippocampus.
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大鼠海马中内部生成的细胞组装序列。

DOI:
10.1126/science.1159775
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发表时间:
2008-09-05
期刊:
影响因子:
56.9
通讯作者:
Buzsaki, Gyoergy
Buzsaki, Gyoergy
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Pastalkova, Eva;Itskov, Vladimir;Amarasingham, Asohan;Buzsaki, Gyoergy

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神经科学中一个长期存在的猜想是,认知的各个方面取决于大脑自我生成连续神经元活动的能力。我们发现,大鼠海马体中可靠且持续变化的细胞组装不仅在空间导航期间出现,而且在没有变化的环境或身体源性输入的情况下也出现。在记忆任务的延迟期间,每个时刻的特征都是独特的神经元组合的活动。相同的初始条件触发相似的组装序列,而不同的条件则独特地产生不同的序列,从而预测行为选择,包括错误。这样的序列不是在控制性、非记忆性任务中形成的。我们假设,为编码空间导航中的距离而进化的神经元表征也支持情景回忆和动作序列的规划。
A longstanding conjecture in neuroscience is that aspects of cognition depend on the brain's ability to self-generate sequential neuronal activity. We found that reliably and continually-changing cell assemblies in the rat hippocampus appeared not only during spatial navigation but also in the absence of changing environmental or body-derived inputs. During the delay period of a memory task each moment in time was characterized by the activity of a unique assembly of neurons. Identical initial conditions triggered a similar assembly sequence, whereas different conditions gave rise, uniquely, to different sequences, thereby predicting behavioral choices, including errors. Such sequences were not formed in control, non-memory, tasks. We hypothesize that neuronal representations, evolved for encoding distance in spatial navigation, also support episodic recall and the planning of action sequences.
DOI: 10.1002/hipo.20301
发表时间: 2007-01-01
期刊: HIPPOCAMPUS
影响因子: 3.5
作者:
Ainge, James A.;van der Meer, Matthijs A. A.;Wood, Emma R.
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