Reliability and state dependence of pyramidal cell-interneuron synapses in the hippocampus: An ensemble approach in the behaving rat

Jozsef Csicsvari, Hajime Hirase, Andras Czurko, György Buzsáki

Research output: Article

372 Citations (Scopus)

Abstract

Spike transmission probability between pyramidal cells and interneurons in the CA1 pyramidal layer was investigated in the behaving rat by the simultaneous recording of neuronal ensembles. Population synchrony was strongest during sharp wave (SPW) bursts. However, the increase was three times larger for pyramidal cells than for interneurons. The contribution of single pyramidal cells to the discharge of interneurons was often large (up to 0.6 probability), as assessed by the presence of significant (<3 ms) peaks in the cross-correlogram. Complex-spike bursts were more effective than single spikes. Single cell contribution was higher between SPW bursts than during SPWs or theta activity. Hence, single pyramidal cells can reliably discharge interneurons, and the probability of spike transmission is behavior dependent.

Original languageEnglish
Pages (from-to)179-189
Number of pages11
JournalNeuron
Volume21
Issue number1
DOIs
Publication statusPublished - júl. 1998

ASJC Scopus subject areas

  • Neuroscience(all)

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