The hippocampal rate code: anatomy, physiology and theory.

The hippocampal rate code: anatomy, physiology and theory.
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DOI:
10.1016/j.tins.2009.01.009
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发表时间:
2009-06
影响因子:
15.9
通讯作者:
Mehta, Mayank R.
Mehta, Mayank R.
中科院分区:
医学1区
文献类型:
--
作者:
Ahmed, Omar J.;Mehta, Mayank R.

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自卡哈尔时代以来,CA 1锥体细胞比哺乳动物大脑中的任何其他神经元都受到了更多的关注。海马CA 1锥体细胞发射具有显著空间和时间精度的尖峰,从而产生海马频率和时间代码。然而,很少有人知道不同的输入如何在空间行为过程中相互作用,以产生这种强大的发射模式。在这里,我们回顾了啮齿动物海马率代码的属性,并从几个学科的综合工作,以了解功能解剖和兴奋-抑制平衡,可以产生率编码输出的CA 1锥体细胞。我们认为,CA 3和内嗅输入是至关重要的尖锐,稀疏的CA 1场的形成,精确定时和显性抑制是一个同样重要的因素。
Since the days of Cajal, the CA1 pyramidal cell has arguably received more attention than any other neuron in the mammalian brain. Hippocampal CA1 pyramidal cells fire spikes with remarkable spatial and temporal precision, giving rise to the hippocampal rate and temporal codes. However, little is known about how different inputs interact during spatial behavior to generate such robust firing patterns. Here, we review the properties of the rodent hippocampal rate code, and synthesize work from several disciplines to understand the functional anatomy and excitation-inhibition balance that can produce the rate coded outputs of the CA1 pyramidal cell. We argue that both CA3 and entorhinal inputs are crucial for the formation of sharp, sparse CA1 place fields and that precisely timed and dominant inhibition is an equally important factor.
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影响因子: 3.1
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