Preservation of spectrotemporal tuning between the nucleus laminaris and the inferior colliculus of the barn owl

G. Björn Christianson, Jose L. Pena

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Performing sound recognition is a task that requires an encoding of the time-varying spectral structure of the auditory stimulus. Similarly, computation of the interaural time difference (ITD) requires knowledge of the precise timing of the stimulus. Consistent with this, low-level nuclei of birds and mammals implicated in ITD processing encode the ongoing phase of a stimulus. However, the brain areas that follow the binaural convergence for the computation of ITD show a reduced capacity for phase locking. In addition, we have shown that in the barn owl there is a pooling of ITD-responsive neurons to improve the reliability of ITD coding. Here we demonstrate that despite two stages of convergence and an effective loss of phase information, the auditory system of the anesthetized barn owl displays a graceful transition to an envelope coding that preserves the spectrotemporal information throughout the ITD pathway to the neurons of the core of the central nucleus of the inferior colliculus.

Original languageEnglish (US)
Pages (from-to)3544-3553
Number of pages10
JournalJournal of Neurophysiology
Volume97
Issue number5
DOIs
StatePublished - May 2007

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Strigiformes
Inferior Colliculi
Neurons
Information Systems
Birds
Mammals
Brain

ASJC Scopus subject areas

  • Physiology
  • Neuroscience(all)

Cite this

Preservation of spectrotemporal tuning between the nucleus laminaris and the inferior colliculus of the barn owl. / Christianson, G. Björn; Pena, Jose L.

In: Journal of Neurophysiology, Vol. 97, No. 5, 05.2007, p. 3544-3553.

Research output: Contribution to journalArticle

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