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Related Concept Videos

Hearing01:31

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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.
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Perception of Sound Waves01:01

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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.
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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.
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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...
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Related Experiment Video

Updated: Jul 26, 2025

Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses
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Web-based psychoacoustics: Hearing screening, infrastructure, and validation.

Brittany A Mok1, Vibha Viswanathan2, Agudemu Borjigin2

  • 1Department of Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, IN, USA.

Behavior Research Methods
|June 16, 2023
PubMed
Summary
This summary is machine-generated.

Web-based psychoacoustic experiments can accurately measure auditory perception, complementing traditional lab studies. This research developed and validated online procedures for reliable auditory testing, including hearing status screening.

Keywords:
Crowd-sourcingOnline auditory experimentsPsychoacousticsRemote hearing screeningWeb-based testing

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Area of Science:

  • Auditory Neuroscience
  • Psychoacoustics
  • Human Perception

Background:

  • Web-based experiments are increasingly common in behavioral research but pose challenges for auditory perception studies due to limited acoustic control and inability to perform audiometry.
  • Validating online methods is crucial for reliable data collection in psychoacoustics, especially for low-level sensory processing.

Approach:

  • Developed a web-based experimental infrastructure using jsPsych and Django for dynamic psychoacoustic task sequences.
  • Implemented a validated screening procedure to select participants with putative normal-hearing status based on suprathreshold tasks and surveys.
  • Standardized headphone use and recruited participants via Prolific, comparing web-based results to established lab-based data.

Key Points:

  • Web-based absolute thresholds for fundamental frequency discrimination, gap detection, and interaural time/level difference sensitivity showed excellent agreement with lab data.
  • Online measurements of word identification, consonant confusion patterns, and co-modulation masking release effect also matched laboratory findings.
  • The study provides open-source code for the developed web-based psychoacoustic infrastructure.

Conclusions:

  • Web-based psychoacoustics offers a viable and reliable complement to traditional laboratory-based auditory research.
  • The validated procedures enable broader participation and data collection for auditory perception studies.
  • This approach facilitates the study of psychoacoustic phenomena in diverse populations and settings.