Synaptic mechanisms of adaptation and sensitization in the retina.
Synaptic mechanisms of adaptation and sensitization in the retina.
复制标题
视网膜适应和致敏的突触机制。
DOI:
10.1038/nn.3408
复制
发表时间:
2013-07
影响因子:
25
通讯作者:
Lagnado, Leon
中科院分区:
文献类型:
--
作者:
Nikolaev, Anton;Leung, Kin-Mei;Odermatt, Benjamin;Lagnado, Leon
Sensory systems continually adjust the way stimuli are processed. What are the circuit mechanisms underlying this plasticity? We investigated how synapses in the retina of zebrafish adjust to changes in the temporal contrast of a visual stimulus by imaging activity in vivo. Following an increase in contrast, bipolar cell synapses with strong initial responses depressed, whereas synapses with weak initial responses facilitated. Depression and facilitation predominated in different strata of the inner retina, where bipolar cell output was anticorrelated with the activity of amacrine cell synapses providing inhibitory feedback. Pharmacological block of GABAergic feedback converted facilitating bipolar cell synapses into depressing ones. These results indicate that depression intrinsic to bipolar cell synapses causes adaptation of the ganglion cell response to contrast, whereas depression in amacrine cell synapses causes sensitization. Distinct microcircuits segregating to different layers of the retina can cause simultaneous increases or decreases in the gain of neural responses.
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DOI:
10.1073/pnas.88.16.7135
发表时间:
1991-08-01
影响因子:
11.1
作者:
HEIDELBERGER, R;MATTHEWS, G
通讯作者:
MATTHEWS, G
影响因子:
5.3
作者:
Kim, KJ;Rieke, F
通讯作者:
Rieke, F
影响因子:
16.2
作者:
Lagnado, L;Gomis, A;Job, C
通讯作者:
Job, C
影响因子:
16.2
作者:
Hull, C;von Gersdorff, H
通讯作者:
von Gersdorff, H
DOI:
10.1523/jneurosci.2631-11.2011
发表时间:
2011-07-27
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Jarsky T;Cembrowski M;Logan SM;Kath WL;Riecke H;Demb JB;Singer JH
通讯作者:
Singer JH