Neuronas que codifican la dirección del sonido

Translated title of the contribution: Neurons that encode sound direction

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Introduction. In the auditory system, the inner ear breaks down complex signals into their spectral components, and encodes the amplitude and phase of each. In order to infer sound direction in space, a computation on each frequency component of the sound must be performed. Development. Space-specific neurons in the owl's inferior colliculus respond only to sounds coming from a particular direction and represent the results of this computation. The interaural time difference (ITD) and interaural level difference (ILD define the auditory space for the owl and are processed inseparate neural pathways. Theparallel pathways that process these cues merge in the external nucleus of the inferior colliculus where the space-specific neurons are selective to combinations of ITD and ILD. How do inputs from the two sources interact to produce combination selectivity to ITD-ILD pairs? A multiplication of postsynaptic potentials tuned to ITD and ILD can account for the subthreshold responses of these neurons to ITD-ILD pairs. Examples of multiplication by neurons or neural circuits are scarce, but many computational models assume the existence of this basic operation. The owl's auditory system uses such operation to create a 2-dimensional map of auditory space. The map of space in the owl's auditory system shows important similarities with representations of space in the cerebral cortex and other sensory systems. In encoding space or other stimulus features, individual neurons appear to possess analogous functional properties related to the synthesis of high-order receptive fields.

Original languageSpanish
Pages (from-to)265-271
Number of pages7
JournalRevista de Neurologia
Volume34
Issue number3
StatePublished - Feb 1 2002
Externally publishedYes

Fingerprint

Strigiformes
Neurons
Inferior Colliculi
Neural Pathways
Synaptic Potentials
Inner Ear
Cerebral Cortex
Cues
Direction compound

Keywords

  • Auditory system
  • Binaural cues
  • Map of space
  • Sound localization

ASJC Scopus subject areas

  • Clinical Neurology

Cite this

Neuronas que codifican la dirección del sonido. / Pena, Jose L.

In: Revista de Neurologia, Vol. 34, No. 3, 01.02.2002, p. 265-271.

Research output: Contribution to journalArticle

@article{45759d8aecd1473d82910f6615cc1cfd,
title = "Neuronas que codifican la direcci{\'o}n del sonido",
abstract = "Introduction. In the auditory system, the inner ear breaks down complex signals into their spectral components, and encodes the amplitude and phase of each. In order to infer sound direction in space, a computation on each frequency component of the sound must be performed. Development. Space-specific neurons in the owl's inferior colliculus respond only to sounds coming from a particular direction and represent the results of this computation. The interaural time difference (ITD) and interaural level difference (ILD define the auditory space for the owl and are processed inseparate neural pathways. Theparallel pathways that process these cues merge in the external nucleus of the inferior colliculus where the space-specific neurons are selective to combinations of ITD and ILD. How do inputs from the two sources interact to produce combination selectivity to ITD-ILD pairs? A multiplication of postsynaptic potentials tuned to ITD and ILD can account for the subthreshold responses of these neurons to ITD-ILD pairs. Examples of multiplication by neurons or neural circuits are scarce, but many computational models assume the existence of this basic operation. The owl's auditory system uses such operation to create a 2-dimensional map of auditory space. The map of space in the owl's auditory system shows important similarities with representations of space in the cerebral cortex and other sensory systems. In encoding space or other stimulus features, individual neurons appear to possess analogous functional properties related to the synthesis of high-order receptive fields.",
keywords = "Auditory system, Binaural cues, Map of space, Sound localization",
author = "Pena, {Jose L.}",
year = "2002",
month = "2",
day = "1",
language = "Spanish",
volume = "34",
pages = "265--271",
journal = "Revista de Neurologia",
issn = "0210-0010",
publisher = "Revista de Neurologia",
number = "3",

}

TY - JOUR

T1 - Neuronas que codifican la dirección del sonido

AU - Pena, Jose L.

PY - 2002/2/1

Y1 - 2002/2/1

N2 - Introduction. In the auditory system, the inner ear breaks down complex signals into their spectral components, and encodes the amplitude and phase of each. In order to infer sound direction in space, a computation on each frequency component of the sound must be performed. Development. Space-specific neurons in the owl's inferior colliculus respond only to sounds coming from a particular direction and represent the results of this computation. The interaural time difference (ITD) and interaural level difference (ILD define the auditory space for the owl and are processed inseparate neural pathways. Theparallel pathways that process these cues merge in the external nucleus of the inferior colliculus where the space-specific neurons are selective to combinations of ITD and ILD. How do inputs from the two sources interact to produce combination selectivity to ITD-ILD pairs? A multiplication of postsynaptic potentials tuned to ITD and ILD can account for the subthreshold responses of these neurons to ITD-ILD pairs. Examples of multiplication by neurons or neural circuits are scarce, but many computational models assume the existence of this basic operation. The owl's auditory system uses such operation to create a 2-dimensional map of auditory space. The map of space in the owl's auditory system shows important similarities with representations of space in the cerebral cortex and other sensory systems. In encoding space or other stimulus features, individual neurons appear to possess analogous functional properties related to the synthesis of high-order receptive fields.

AB - Introduction. In the auditory system, the inner ear breaks down complex signals into their spectral components, and encodes the amplitude and phase of each. In order to infer sound direction in space, a computation on each frequency component of the sound must be performed. Development. Space-specific neurons in the owl's inferior colliculus respond only to sounds coming from a particular direction and represent the results of this computation. The interaural time difference (ITD) and interaural level difference (ILD define the auditory space for the owl and are processed inseparate neural pathways. Theparallel pathways that process these cues merge in the external nucleus of the inferior colliculus where the space-specific neurons are selective to combinations of ITD and ILD. How do inputs from the two sources interact to produce combination selectivity to ITD-ILD pairs? A multiplication of postsynaptic potentials tuned to ITD and ILD can account for the subthreshold responses of these neurons to ITD-ILD pairs. Examples of multiplication by neurons or neural circuits are scarce, but many computational models assume the existence of this basic operation. The owl's auditory system uses such operation to create a 2-dimensional map of auditory space. The map of space in the owl's auditory system shows important similarities with representations of space in the cerebral cortex and other sensory systems. In encoding space or other stimulus features, individual neurons appear to possess analogous functional properties related to the synthesis of high-order receptive fields.

KW - Auditory system

KW - Binaural cues

KW - Map of space

KW - Sound localization

UR - http://www.scopus.com/inward/record.url?scp=0036483462&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036483462&partnerID=8YFLogxK

M3 - Article

VL - 34

SP - 265

EP - 271

JO - Revista de Neurologia

JF - Revista de Neurologia

SN - 0210-0010

IS - 3

ER -