A modeling framework for deriving the structural and functional architecture of a short-term memory microcircuit.
A modeling framework for deriving the structural and functional architecture of a short-term memory microcircuit.
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DOI:
10.1016/j.neuron.2013.06.041
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发表时间:
2013-09-04
期刊:
影响因子:
16.2
通讯作者:
Goldman MS
中科院分区:
文献类型:
--
作者:
Fisher D;Olasagasti I;Tank DW;Aksay ER;Goldman MS
Although many studies have identified neural correlates of memory, relatively little is known about the circuit properties connecting single-neuron physiology to behavior. Here we developed a modeling framework to bridge this gap and identify circuit interactions capable of maintaining short-term memory. Unlike typical studies that construct a phenomenological model and test whether it reproduces select aspects of neuronal data, we directly fit the synaptic connectivity of an oculomotor memory circuit to a broad range of anatomical, electrophysiological, and behavioral data. Simultaneous fits to all data, combined with sensitivity analyses, revealed complementary roles of synaptic and neuronal-recruitment thresholds in providing the nonlinear interactions required to generate the observed circuit behavior. This work introduces a new methodology for identifying the cellular and synaptic mechanisms underlying short-term memory, and demonstrates how the anatomical structure of a circuit may belie its functional organization.
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