Linked Life Data

2237784

Source:http://linkedlifedata.com/resource/pubmed/id/2237784

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1990-12-21
pubmed:abstractText
The manner in which the circuitry of the amygdala computes its suspected mnemonic functions has been a mystery, partly because the cytoarchitectual complexity of this nuclear group has impeded the necessary cellular analysis. Here we report in vitro methods and results that may help elucidate cellular learning mechanisms in amygdala neurons. The amygdala brain slice preparation was combined with the single-electrode clamp (SEC) technique for intracellular analysis of membrane properties and synaptic responses. With respect to the active and passive membrane properties, we found considerable diversity among the population of cells that were sampled in the lateral and basolateral nuclei (n = 85). Synaptic inputs to these neurons were studied by stimulating the external capsule (EC), which was shown to produce a complex response that typically consisted of an excitatory followed by an inhibitory component. Based on several criteria, the excitatory component appeared to reflect a monosynaptic connection from the EC. One immediate goal was to discover whether the excitatory component displays the phenomenon of long-term potentiation (LTP)--a persistent increase in synaptic strength that can be induced by brief periods of the appropriate synaptic stimulation. Indeed, we found that high-frequency (100 Hz) stimulation of the EC induced LTP in 80% of the cells from which suitable recordings were obtained (n = 20). This finding of LTP in the amygdala is significant in regard to current efforts to explore linkages between this use-dependent form of synaptic plasticity and rapid kinds of associative learning.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0887-4476
pubmed:author
pubmed:issnType
Print
pubmed:volume
6
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
271-8
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Long-term synaptic potentiation in the amygdala.
pubmed:affiliation
Department of Psychology, Yale University, New Haven, Connecticut 06520.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.