Neural dynamics underlying birdsong practice and performance.

Journal Article (Journal Article)

Musical and athletic skills are learned and maintained through intensive practice to enable precise and reliable performance for an audience. Consequently, understanding such complex behaviours requires insight into how the brain functions during both practice and performance. Male zebra finches learn to produce courtship songs that are more varied when alone and more stereotyped in the presence of females1. These differences are thought to reflect song practice and performance, respectively2,3, providing a useful system in which to explore how neurons encode and regulate motor variability in these two states. Here we show that calcium signals in ensembles of spiny neurons (SNs) in the basal ganglia are highly variable relative to their cortical afferents during song practice. By contrast, SN calcium signals are strongly suppressed during female-directed performance, and optogenetically suppressing SNs during practice strongly reduces vocal variability. Unsupervised learning methods4,5 show that specific SN activity patterns map onto distinct song practice variants. Finally, we establish that noradrenergic signalling reduces vocal variability by directly suppressing SN activity. Thus, SN ensembles encode and drive vocal exploration during practice, and the noradrenergic suppression of SN activity promotes stereotyped and precise song performance for an audience.

Full Text

Duke Authors

Cited Authors

  • Singh Alvarado, J; Goffinet, J; Michael, V; Liberti, W; Hatfield, J; Gardner, T; Pearson, J; Mooney, R

Published Date

  • November 2021

Published In

Volume / Issue

  • 599 / 7886

Start / End Page

  • 635 - 639

PubMed ID

  • 34671166

Pubmed Central ID

  • PMC9118926

Electronic International Standard Serial Number (EISSN)

  • 1476-4687

Digital Object Identifier (DOI)

  • 10.1038/s41586-021-04004-1

Language

  • eng

Conference Location

  • England