Climbing fiber synapses rapidly and transiently inhibit neighboring Purkinje cells via ephaptic coupling.
Climbing fiber synapses rapidly and transiently inhibit neighboring Purkinje cells via ephaptic coupling.
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DOI:
10.1038/s41593-020-0701-z
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发表时间:
2020-11
影响因子:
25
通讯作者:
Regehr WG
中科院分区:
文献类型:
--
作者:
Han KS;Chen CH;Khan MM;Guo C;Regehr WG
Climbing fibers (CFs) from the inferior olive (IO) make strong excitatory synapses onto cerebellar Purkinje cell (PC) dendrites, and trigger distinctive responses known as complex spikes (CSs). We find that in awake mice, a CS in one PC suppresses conventional simple spikes (SSs) in neighboring PCs for several milliseconds. This involves a novel ephaptic coupling, in which an excitatory synapse generates large negative extracellular signals that nonsynaptically inhibit neighboring PCs. The distance dependence of CS-SS ephaptic signaling, combined with the known CF divergence, allows a single IO neuron to influence the output of the cerebellum by synchronously suppressing the firing of potentially over one hundred PCs. Optogenetic studies in vivo, and dynamic clamp studies in slice, indicate that such brief PC suppression, either as a result of ephaptic signaling or other mechanisms, can effectively promote firing in neurons in the deep cerebellar nuclei with remarkable speed and precision.
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影响因子:
16.2
作者:
Carter BC;Giessel AJ;Sabatini BL;Bean BP
通讯作者:
Bean BP
DOI:
10.1007/s12311-018-0952-3
发表时间:
2018-10
期刊:
Cerebellum (London, England)
影响因子:
--
作者:
Apps R;Hawkes R;Aoki S;Bengtsson F;Brown AM;Chen G;Ebner TJ;Isope P;Jörntell H;Lackey EP;Lawrenson C;Lumb B;Schonewille M;Sillitoe RV;Spaeth L;Sugihara I;Valera A;Voogd J;Wylie DR;Ruigrok TJH
通讯作者:
Ruigrok TJH
影响因子:
25
作者:
Heffley W;Song EY;Xu Z;Taylor BN;Hughes MA;McKinney A;Joshua M;Hull C
通讯作者:
Hull C
影响因子:
8.8
作者:
Arlt, Charlotte;Hausser, Michael
通讯作者:
Hausser, Michael
影响因子:
5.5
作者:
ECCLES, JC;LLINAS, R;SASAKI, K
通讯作者:
SASAKI, K