Calcium as a Trigger for Cerebellar Long-Term Synaptic Depression

Title
Calcium as a Trigger for Cerebellar Long-Term Synaptic Depression
Authors
Elizabeth A. Finch게이코 야마모토조지어거스틴
Keywords
Synaptic plasticity; Purkinje cell; IP3; Ca2+ channel; Protein kinase C
Issue Date
2012-09
Publisher
CEREBELLUM
Citation
VOL 11, NO 3, 706-717
Abstract
Cerebellar long-term depression (LTD) is a form of long-term synaptic plasticity that is triggered by calcium (Ca2+) signals in the postsynaptic Purkinje cell. This Ca2+ comes both from IP3-mediated release from intracellular Ca2+ stores, as well as from Ca2+ influx through voltagegated Ca2+ channels. The Ca2+ signal that triggers LTD occurs locally within dendritic spines and is due to supralinear summation of signals coming from these two Ca2+ sources. The properties of this postsynaptic Ca2+ signal can explain several features of LTD, such as its associativity, synapse specificity, and dependence on the timing of synaptic activity, and can account for the slow kinetics of LTD expression. Thus, from a Ca2+ signaling perspective, LTD is one of the best understood forms of synaptic plasticity.
URI
http://pubs.kist.re.kr/handle/201004/41909
ISSN
14734222
Appears in Collections:
KIST Publication > Article
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