Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Interaural phase coding in auditory midbrain: influence of dynamic stimulus features.

M W Spitzer1, M N Semple

  • 1Department of Anatomy and Neurobiology, University of California, Irvine, CA 92717.

Science (New York, N.Y.)
|November 1, 1991
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Object localization in cluttered acoustical environments.

Biological cybernetics·2008
Same author

The synthesis and use of the owl's auditory space map.

Biological cybernetics·2003
Same author

Effects of auditory stimulus context on the representation of frequency in the gerbil inferior colliculus.

Journal of neurophysiology·2001
Same author

Spontaneous and stimulus-evoked intrinsic optical signals in primary auditory cortex of the cat.

Journal of neurophysiology·2001
Same author

Auditory temporal processing: responses to sinusoidally amplitude-modulated tones in the inferior colliculus.

Journal of neurophysiology·2000
Same author

Conditioned enhancement and suppression in the developing auditory midbrain.

The European journal of neuroscience·1999
Same journal

Erratum for the Research Article "Detecting supramolecular organic nanoparticles during heat wave".

Science (New York, N.Y.)·2026
Same journal

Local signals, systemic decline.

Science (New York, N.Y.)·2026
Same journal

The mechanics of liver regeneration.

Science (New York, N.Y.)·2026
Same journal

Computing in a memory with physics.

Science (New York, N.Y.)·2026
Same journal

Retraction.

Science (New York, N.Y.)·2026
Same journal

Making time.

Science (New York, N.Y.)·2026
See all related articles

Sound localization relies on interaural phase disparities (IPDs). This study reveals that the brain processes dynamic changes in IPDs rather than absolute values, challenging existing theories of directional coding.

Area of Science:

  • Neuroscience
  • Auditory Perception
  • Computational Neuroscience

Background:

  • Sound localization is crucial for survival and relies on binaural cues.
  • Interaural phase disparities (IPDs) are key cues for determining sound source location.
  • Natural soundscapes often involve dynamic changes in these auditory cues.

Purpose of the Study:

  • To investigate the neural coding of dynamic interaural phase disparities (IPDs) in the inferior colliculus.
  • To determine if neural responses reflect absolute IPDs or changes in IPDs under naturalistic conditions.
  • To challenge the established view of directional information coding.

Main Methods:

  • Electrophysiological recordings in the inferior colliculus of gerbils and cats.
  • Stimulation with ecologically realistic, dynamic interaural phase cues.

Related Experiment Videos

  • Analysis of neural responses to varying IPDs and their temporal changes.

    • Main Results:

    • Nonlinearities were observed in the coding of dynamic interaural phase cues.
    • Neural responses were more strongly correlated with the rate of change of IPDs than with absolute IPD values.
    • This suggests a coding mechanism sensitive to temporal dynamics over static spatial information.

    Conclusions:

    • The coding of sound source direction in the inferior colliculus may prioritize dynamic cue changes over absolute interaural phase disparities.
    • This finding challenges the traditional model of directional coding based solely on absolute IPDs.
    • The brain's auditory system exhibits sophisticated processing of temporal variations in binaural cues for sound localization.