Spatial cue reliability drives frequency tuning in the barn Owl's midbrain

Fanny Cazettes, Brian J. Fischer, Jose L. Pena

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The robust representation of the environment from unreliable sensory cues is vital for the efficient function of the brain. However, how the neural processing captures the most reliable cues is unknown. The interaural time difference (ITD) is the primary cue to localize sound in horizontal space. ITD is encoded in the firing rate of neurons that detect interaural phase difference (IPD). Due to the filtering effect of the head, IPD for a given location varies depending on the environmental context. We found that, in barn owls, at each location there is a frequency range where the head filtering yields the most reliable IPDs across contexts. Remarkably, the frequency tuning of space-specific neurons in the owl's midbrain varies with their preferred sound location, matching the range that carries the most reliable IPD. Thus, frequency tuning in the owl's space-specific neurons reflects a higher-order feature of the code that captures cue reliability.

Original languageEnglish (US)
Pages (from-to)e04854
JournaleLife
Volume3
DOIs
StatePublished - 2014

Fingerprint

Strigiformes
Mesencephalon
Neurons
Cues
Tuning
Acoustic waves
Head
Brain
Processing
Drive

Keywords

  • barn owl
  • cue reliability
  • neural coding
  • neuroscience
  • sound localization

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Spatial cue reliability drives frequency tuning in the barn Owl's midbrain. / Cazettes, Fanny; Fischer, Brian J.; Pena, Jose L.

In: eLife, Vol. 3, 2014, p. e04854.

Research output: Contribution to journalArticle

Cazettes, Fanny ; Fischer, Brian J. ; Pena, Jose L. / Spatial cue reliability drives frequency tuning in the barn Owl's midbrain. In: eLife. 2014 ; Vol. 3. pp. e04854.
@article{2b8d31cad7c34152a0e53c8c5d29324c,
title = "Spatial cue reliability drives frequency tuning in the barn Owl's midbrain",
abstract = "The robust representation of the environment from unreliable sensory cues is vital for the efficient function of the brain. However, how the neural processing captures the most reliable cues is unknown. The interaural time difference (ITD) is the primary cue to localize sound in horizontal space. ITD is encoded in the firing rate of neurons that detect interaural phase difference (IPD). Due to the filtering effect of the head, IPD for a given location varies depending on the environmental context. We found that, in barn owls, at each location there is a frequency range where the head filtering yields the most reliable IPDs across contexts. Remarkably, the frequency tuning of space-specific neurons in the owl's midbrain varies with their preferred sound location, matching the range that carries the most reliable IPD. Thus, frequency tuning in the owl's space-specific neurons reflects a higher-order feature of the code that captures cue reliability.",
keywords = "barn owl, cue reliability, neural coding, neuroscience, sound localization",
author = "Fanny Cazettes and Fischer, {Brian J.} and Pena, {Jose L.}",
year = "2014",
doi = "10.7554/eLife.04854",
language = "English (US)",
volume = "3",
pages = "e04854",
journal = "eLife",
issn = "2050-084X",
publisher = "eLife Sciences Publications",

}

TY - JOUR

T1 - Spatial cue reliability drives frequency tuning in the barn Owl's midbrain

AU - Cazettes, Fanny

AU - Fischer, Brian J.

AU - Pena, Jose L.

PY - 2014

Y1 - 2014

N2 - The robust representation of the environment from unreliable sensory cues is vital for the efficient function of the brain. However, how the neural processing captures the most reliable cues is unknown. The interaural time difference (ITD) is the primary cue to localize sound in horizontal space. ITD is encoded in the firing rate of neurons that detect interaural phase difference (IPD). Due to the filtering effect of the head, IPD for a given location varies depending on the environmental context. We found that, in barn owls, at each location there is a frequency range where the head filtering yields the most reliable IPDs across contexts. Remarkably, the frequency tuning of space-specific neurons in the owl's midbrain varies with their preferred sound location, matching the range that carries the most reliable IPD. Thus, frequency tuning in the owl's space-specific neurons reflects a higher-order feature of the code that captures cue reliability.

AB - The robust representation of the environment from unreliable sensory cues is vital for the efficient function of the brain. However, how the neural processing captures the most reliable cues is unknown. The interaural time difference (ITD) is the primary cue to localize sound in horizontal space. ITD is encoded in the firing rate of neurons that detect interaural phase difference (IPD). Due to the filtering effect of the head, IPD for a given location varies depending on the environmental context. We found that, in barn owls, at each location there is a frequency range where the head filtering yields the most reliable IPDs across contexts. Remarkably, the frequency tuning of space-specific neurons in the owl's midbrain varies with their preferred sound location, matching the range that carries the most reliable IPD. Thus, frequency tuning in the owl's space-specific neurons reflects a higher-order feature of the code that captures cue reliability.

KW - barn owl

KW - cue reliability

KW - neural coding

KW - neuroscience

KW - sound localization

UR - http://www.scopus.com/inward/record.url?scp=84944723538&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84944723538&partnerID=8YFLogxK

U2 - 10.7554/eLife.04854

DO - 10.7554/eLife.04854

M3 - Article

VL - 3

SP - e04854

JO - eLife

JF - eLife

SN - 2050-084X

ER -