Social behavior modulates songbird interpeduncular nucleus function

Mamiko Koshiba, Isabelle George, Erina Hara, Neal A. Hessler

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Male zebra finches produce the same song while alone and during courtship of a female. However, singing-related activity in the anterior forebrain nuclei lateral magnocellular anterior nidopallium and Area X markedly depends on the social context. Thus, the anterior forebrain should receive a signal of social context from outside the song system. Here we investigated a possible source of such modulation, the midbrain interpeduncular nucleus, by monitoring immediate early genes and synaptic activity. The level of immunoreactivity for egrl was high and calretinin was low following courtship directed singing, but the opposite pattern was seen after solo undirected singing. Further, pairs of stimulation caused depression of synaptic responses after directed singing, but facilitation after undirected singing.

Original languageEnglish
Pages (from-to)445-449
Number of pages5
Issue number5
Publication statusPublished - 2005 Apr 4


  • Birdsong
  • Calcium buffer
  • Midbrain
  • Motivation
  • Reward
  • Songbird
  • Synaptic plasticity


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