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

Computational models of temporal processing in the auditory thalamus.

D A Llano1, A S Feng

  • 1Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, 61801, USA. d-llano@uiuc.edu

Biological Cybernetics
|November 10, 2000
PubMed
Summary

This study reveals how inhibitory circuits in the auditory thalamus (MGB) shape neural responses in bats. Feed-forward inhibition and GABA(B) signaling are key to processing complex sounds for prey detection.

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

Ageing-related changes in GABAergic inhibition in mouse auditory cortex, measured using in vitro flavoprotein autofluorescence imaging.

The Journal of physiology·2015
Same author

Lithium alters the morphology of neurites regenerating from cultured adult spiral ganglion neurons.

Hearing research·2013
Same author

Evidence for layer-specific differences in auditory corticocollicular neurons.

Neuroscience·2012
Same author

Cell's intrinsic biophysical properties play a role in the systematic decrease in time-locking ability of central auditory neurons.

Neuroscience·2012
Same author

Expression of Wnt receptors in adult spiral ganglion neurons: frizzled 9 localization at growth cones of regenerating neurites.

Neuroscience·2009
Same author

Different distributions of calbindin and calretinin immunostaining across the medial and dorsal divisions of the mouse medial geniculate body.

Hearing research·2009

Area of Science:

  • Neuroscience
  • Auditory System Research
  • Computational Neuroscience

Background:

  • Neurons in the medial geniculate body (MGB) of echolocating bats exhibit distinct temporal response patterns compared to their inputs from the inferior colliculus (IC).
  • These MGB neurons show phasic firing, poor entrainment to steady sounds, and enhanced responses to amplitude-modulated sounds.

Purpose of the Study:

  • To investigate the role of different inhibitory mechanisms in shaping the temporal response properties of auditory thalamocortical neurons.
  • To determine the contribution of specific inhibitory pathways to the observed neural transformations in the MGB.

Main Methods:

  • Utilized a computational modeling approach to simulate neural activity.
  • Examined the effects of GABA(A)-mediated and GABA(B)-mediated inhibition on neuronal temporal responses.

Related Experiment Videos

  • Assessed the necessity of recurrent inhibition from the thalamic reticular nucleus and postsynaptic nonlinearities.

    • Main Results:

    • GABA(A)-mediated inhibition, particularly in a triadic arrangement, sufficiently replicated many MGB temporal response properties.
    • Incorporating long-duration GABA(B)-mediated inhibition further improved the model's resemblance to experimental data.
    • Recurrent inhibition and nonlinear postsynaptic mechanisms were not required to explain the IC-to-MGB transformations.

    Conclusions:

    • Feed-forward inhibitory circuitry combined with slow GABA(B)-mediated inhibition effectively models temporal information processing in the MGB.
    • These inhibitory mechanisms enable the MGB to extract crucial features from complex, time-varying auditory stimuli, such as echoes from moving prey.