Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1999-4-29
pubmed:abstractText
Intracellular recordings from reticular thalamic (RE) neurons in vivo revealed inhibitory postsynaptic potentials (IPSPs) between RE cells that reversed and became depolarizing at the hyperpolarized membrane potentials that occur during sleep. These excitatory IPSPs can directly trigger low-threshold spikes (LTSs). The oscillatory mechanisms underlying IPSP-triggered LTSs crowned by spike bursts were investigated in models of isolated RE networks. In a one-dimensional network model, external stimulation evoked waves of excitation propagating at a constant velocity of 25-150 cells per second. In a large-scale, two-dimensional model of the reticular nucleus, the network showed transient or self-sustained oscillations controlled by the maximum conductance of the low-threshold calcium current and the membrane potential. This model predicts that the isolated reticular nucleus could initiate sequences of spindle oscillations in thalamocortical networks in vivo.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
1097-6256
pubmed:author
pubmed:issnType
Print
pubmed:volume
2
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
168-74
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Self-sustained rhythmic activity in the thalamic reticular nucleus mediated by depolarizing GABAA receptor potentials.
pubmed:affiliation
Howard Hughes Medical Institute, Salk Institute, La Jolla, California 92037, USA. bazhenov@salk.edu
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't