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Related Concept Videos

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.
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.
Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by identifying...
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...
Perception of Sound Waves01:01

Perception of Sound Waves

The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same frequency...
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...

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Spatial and spectrotemporal features of noise alter female responses to costly male signals in Cope's gray treefrog (Hyla chrysoscelis).

Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology·2026
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Testosterone and estradiol predict male calling performance, but not performance-related tradeoffs, in competitive signaling environments in Cope's gray treefrogs (Hyla chrysoscelis).

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Related Experiment Video

Updated: May 25, 2026

Physiological Preparation of Hair Cells from the Sacculus of the American Bullfrog (Rana catesbeiana)
12:07

Physiological Preparation of Hair Cells from the Sacculus of the American Bullfrog (Rana catesbeiana)

Published on: March 17, 2017

Sound source perception in anuran amphibians.

Mark A Bee1

  • 1Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, MN 55108, USA. mbee@umn.edu

Current Opinion in Neurobiology
|January 24, 2012
PubMed
Summary

Frogs can identify individual calls in noisy environments, similar to birds and mammals. This auditory scene analysis is crucial for their communication and survival.

Area of Science:

  • Neuroethology
  • Auditory Neuroscience
  • Animal Communication

Background:

  • Sound source perception is vital for interpreting complex acoustic environments.
  • Anuran amphibians rely on auditory processing for social and reproductive behaviors.
  • Understanding auditory scene analysis in frogs is limited.

Purpose of the Study:

  • To investigate how frogs perform auditory scene analysis.
  • To understand the mechanisms frogs use to identify sound sources in noisy environments.
  • To compare auditory processing in frogs with other vertebrates.

Main Methods:

  • Neuroethological studies examining auditory processing in frogs.
  • Analysis of frog vocalizations and responses in naturalistic settings.

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A Low Cost Setup for Behavioral Audiometry in Rodents

Published on: October 16, 2012

Related Experiment Videos

Last Updated: May 25, 2026

Physiological Preparation of Hair Cells from the Sacculus of the American Bullfrog (Rana catesbeiana)
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Published on: March 17, 2017

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A Low Cost Setup for Behavioral Audiometry in Rodents

Published on: October 16, 2012

  • Comparative analysis of auditory system functions across taxa.

    • Main Results:

    • Frogs can parse complex acoustic scenes to identify individual calls.
    • Evidence suggests similarities and differences in auditory scene analysis between frogs and other vertebrates like birds and mammals.
    • The auditory systems of frogs exhibit sophisticated noise-filtering capabilities.

    Conclusions:

    • Frogs possess advanced auditory scene analysis abilities essential for communication.
    • Comparative neuroethology reveals conserved and divergent strategies in vertebrate auditory processing.
    • Further research can illuminate the evolution of auditory perception.