Interaural level difference-dependent gain control and synaptic scaling underlying binaural computation.
Interaural level difference-dependent gain control and synaptic scaling underlying binaural computation.
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双耳计算背后的耳间电平差相关增益控制和突触缩放
DOI:
10.1016/j.neuron.2013.06.012
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发表时间:
2013-08-21
期刊:
影响因子:
16.2
通讯作者:
Zhang LI
中科院分区:
文献类型:
--
作者:
Xiong XR;Liang F;Li H;Mesik L;Zhang KK;Polley DB;Tao HW;Xiao Z;Zhang LI
Binaural integration in the central nucleus of inferior colliculus (ICC) plays a critical role in sound localization. However, its arithmetic nature and underlying synaptic mechanisms remain unclear. Here, we showed in mouse ICC neurons that the contralateral dominance is created by a “push-pull”-like mechanism, with contralaterally dominant excitation and more bilaterally balanced inhibition. Importantly, binaural spiking response is generated apparently from an ipsilaterally-mediated scaling of contralateral response, leaving frequency tuning unchanged. This scaling effect is attributed to a divisive attenuation of contralaterally-evoked synaptic excitation onto ICC neurons with their inhibition largely unaffected. Thus, a gain control mediates the linear transformation from monaural to binaural spike responses. The gain value is modulated by interaural level difference (ILD) primarily through scaling excitation to different levels. The ILD-dependent synaptic scaling and gain adjustment allow ICC neurons to dynamically encode interaural sound localization cues while maintaining an invariant representation of other independent sound attributes.
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影响因子:
16.2
作者:
Atallah BV;Bruns W;Carandini M;Scanziani M
通讯作者:
Scanziani M
DOI:
10.1523/jneurosci.2228-10.2010
发表时间:
2010-10-27
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Li N;Gittelman JX;Pollak GD
通讯作者:
Pollak GD
影响因子:
64.8
作者:
Lee, Seung-Hee;Kwan, Alex C.;Zhang, Siyu;Phoumthipphavong, Victoria;Flannery, John G.;Masmanidis, Sotiris C.;Taniguchi, Hiroki;Huang, Z. Josh;Zhang, Feng;Boyden, Edward S.;Deisseroth, Karl;Dan, Yang
通讯作者:
Dan, Yang
影响因子:
2.5
作者:
Miller, KD;Troyer, TW
通讯作者:
Troyer, TW
DOI:
10.1007/0-387-27083-3_22
发表时间:
2005-01-01
期刊:
INFERIOR COLLICULUS
影响因子:
--
作者:
Casseday, JH;Schreiner, CE;Winer, JA
通讯作者:
Winer, JA