Neurophysiological coordination of duet singing

Melissa J. Coleman, Nancy F. Day, Pamela Rivera-Parra, Eric S. Fortune

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Coordination of behavior for cooperative performances often relies on linkages mediated by sensory cues exchanged between participants. How neurophysiological responses to sensory information affect motor programs to coordinate behavior between individuals is not known. We investigated how plain-tailed wrens (Pheugopedius euophrys) use acoustic feedback to coordinate extraordinary duet performances in which females and males rapidly take turns singing. We made simultaneous neurophysiological recordings in a song control area “HVC” in pairs of singing wrens at a field site in Ecuador. HVC is a premotor area that integrates auditory feedback and is necessary for song production. We found that spiking activity of HVC neurons in each sex increased for production of its own syllables. In contrast, hearing sensory feedback produced by the bird's partner decreased HVC activity during duet singing, potentially coordinating HVC premotor activity in each bird through inhibition. When birds sang alone, HVC neurons in females but not males were inhibited by hearing the partner bird. When birds were anesthetized with urethane, which antagonizes GABAergic (γ-aminobutyric acid) transmission, HVC neurons were excited rather than inhibited, suggesting a role for GABA in the coordination of duet singing. These data suggest that HVC integrates information across partners during duets and that rapid turn taking may be mediated, in part, by inhibition.

Original languageEnglish (US)
Article numbere2018188118
JournalProceedings of the National Academy of Sciences of the United States of America
Volume118
Issue number23
DOIs
StatePublished - Jun 8 2021

All Science Journal Classification (ASJC) codes

  • General

Keywords

  • Closed-loop control
  • Cooperation
  • Reciprocal inhibition
  • Sensorimotor integration
  • Turn taking

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