Bilaterally symmetrical respiratory activity during lateralized birdsong

Franz Goller, Roderick Suthers

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We investigated whether activity of expiratory muscles reflects lateralized activity of the vocal organ during production of birdsong. Respiration and syringeal motor activity were assessed in brown thrashers by monitoring bilateral airflow and subsyringeal air sac pressure, together with the electromyographic activity of expiratory abdominal muscles and vocal output. Activity of expiratory muscles was always present on both sides, regardless of whether song was produced bilaterally or on only one side of the syrinx. The average amplitude of expiratory EMG of one side does not change significantly, even if that side is silent during phonation. The temporal pattern of the electromyogram (EMG) was similar on both sides. Bilateral bursts of EMG activity on both sides accompanied changes in the rate of syringeal airflow, even when these flow fluctuations were generated only by one side of the syrinx. Motor commands to the respiratory muscles therefore appear to be bilaterally distributed, in contrast to the lateralized motor control of the syrinx.

Original languageEnglish
Pages (from-to)513-523
Number of pages11
JournalJournal of Neurobiology
Volume41
Issue number4
DOIs
StatePublished - 1999

Fingerprint

Syringes
Electromyography
Air Sacs
Air Pressure
Abdominal Muscles
Phonation
Muscles
Respiratory Muscles
Music
Respiration
Motor Activity

Keywords

  • Motor control
  • Motor coordination
  • Neural lateralization
  • Respiratory muscles
  • Song production

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Bilaterally symmetrical respiratory activity during lateralized birdsong. / Goller, Franz; Suthers, Roderick.

In: Journal of Neurobiology, Vol. 41, No. 4, 1999, p. 513-523.

Research output: Contribution to journalArticle

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