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Related Concept Videos

Auditory Pathway01:15

Auditory Pathway

Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
Hearing01:31

Hearing

When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
Auditory Perception01:17

Auditory Perception

The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the cochlea, a...
The Cochlea01:13

The Cochlea

The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.

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Related Experiment Video

Updated: Jun 9, 2026

Experience is Instrumental in Tuning a Link Between Language and Cognition: Evidence from 6- to 7- Month-Old Infants' Object Categorization
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Published on: April 19, 2017

Experience-dependent development of vocalization selectivity in the auditory cortex.

Khaleel A Razak1, Zoltan M Fuzessery

  • 1Department of Psychology, University of California, 900 University Avenue, Riverside, California 92521, USA.

The Journal of the Acoustical Society of America
|September 7, 2010
PubMed
Summary
This summary is machine-generated.

Neural plasticity in auditory systems allows for vocalization selectivity. Experience shapes this selectivity, with inhibitory plasticity playing a key role in how bats process echolocation calls.

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Area of Science:

  • Neuroscience
  • Auditory Neuroscience
  • Sensory Processing

Background:

  • Vocalization-selective neurons are found in vertebrate auditory systems.
  • Developmental experience influences vocalization selectivity, but mechanisms are not fully understood.
  • Inhibitory plasticity is hypothesized to underlie vocalization selectivity plasticity.

Purpose of the Study:

  • To investigate the role of experience in the development of vocalization selectivity in the pallid bat auditory cortex.
  • To test the hypothesis that FM direction selectivity, but not rate selectivity, is experience-dependent.
  • To explore the relationship between inhibitory and excitatory inputs and sweep selectivity.

Main Methods:

  • Altering echolocation experience during development in pallid bats.
  • Measuring neuronal responses in the auditory cortex to frequency-modulated (FM) sweeps.
  • Analyzing the timing of inhibitory and excitatory inputs to neurons.

Main Results:

  • Normal echolocation experience is crucial for both the development and maintenance of direction selectivity.
  • Experience is necessary for the maintenance, but not initial development, of FM rate selectivity.
  • The timing of inhibitory and excitatory inputs explains sweep selectivity across all conditions.

Conclusions:

  • Inhibitory plasticity is a key mechanism for experience-dependent changes in vocalization selectivity.
  • Auditory system development and refinement of sensory processing are shaped by experience.
  • Understanding these mechanisms provides insights into neural plasticity and sensory adaptation.