Locally coordinated synaptic plasticity of visual cortex neurons in vivo.

Locally coordinated synaptic plasticity of visual cortex neurons in vivo.
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DOI:
10.1126/science.aao0862
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发表时间:
2018-06-22
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Sur M
Sur M
中科院分区:
其他
文献类型:
--
作者:
El-Boustani S;Ip JPK;Breton-Provencher V;Knott GW;Okuno H;Bito H;Sur M

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Plasticity of cortical responses in vivo involves activity-dependent changes at synapses, but the manner in which different forms of synaptic plasticity act together to create functional changes in neurons remains unknown. We found that spike timing-induced receptive field plasticity of visual cortex neurons is anchored by increases in synaptic strength of identified spines. This is accompanied by a decrease in the strength of adjacent spines on a slower time scale. The locally coordinated potentiation and depression of spines involves prominent AMPA receptor redistribution via targeted expression of the immediate early gene Arc. Hebbian strengthening of activated synapses and heterosynaptic weakening of adjacent synapses thus co-operatively orchestrate cell-wide plasticity of functional neuronal responses. Local strengthening and weakening of synapses, mediated by Arc, reorganizes responses on dendrites to mediate functional plasticity of neuronal responses in vivo.
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