Ventral CA1 neurons store social memory

Teruhiro Okuyama, Takashi Kitamura, Dheeraj S. Roy, Shigeyoshi Itohara, Susumu Tonegawa

Research output: Contribution to journalArticlepeer-review

349 Scopus citations


The medial temporal lobe, including the hippocampus, has been implicated in social memory. However, it remains unknown which parts of these brain regions and their circuits hold social memory. Here, we show that ventral hippocampal CA1 (vCA1) neurons of a mouse and their projections to nucleus accumbens (NAc) shell play a necessary and sufficient role in social memory. Both the proportion of activated vCA1 cells and the strength and stability of the responding cells are greater in response to a familiar mouse than to a previously unencountered mouse. Optogenetic reactivation of vCA1 neurons that respond to the familiar mouse enabled memory retrieval and the association of these neurons with unconditioned stimuli. Thus, vCA1 neurons and their NAc shell projections are a component of the storage site of social memory.

Original languageEnglish (US)
Pages (from-to)1536-1541
Number of pages6
Issue number6307
StatePublished - Sep 30 2016

ASJC Scopus subject areas

  • General


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