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Auditory Perception

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...

Perception of Sound Waves

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...

Perceiving Loudness, Pitch, and Location

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...

Hearing

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.

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Related Experiment Video

Updated: Mar 15, 2026

A Method to Study Adaptation to Left-Right Reversed Audition

A Method to Study Adaptation to Left-Right Reversed Audition

Published on: October 29, 2018

McGurk illusion recalibrates subsequent auditory perception.

Claudia S Lüttke¹, Matthias Ekman¹, Marcel A J van Gerven¹

¹Radboud University Nijmegen, Donders Institute for Brain, Cognition and Behaviour, the Netherlands.

Scientific Reports

|September 10, 2016

Summary

This summary is machine-generated.

The McGurk illusion, where seeing one sound alters hearing another, can recalibrate subsequent auditory perception. This visual-auditory fusion shifts how the brain processes speech sounds, affecting future perception.

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Area of Science:

Neuroscience
Psychology
Speech Perception

Background:

Auditory perception is influenced by visual information, as demonstrated by the McGurk illusion.
The McGurk illusion merges auditory /aba/ with visual /aga/ to create a percept of /ada/.
It remains unclear if this perceptual alteration recalibrates subsequent auditory processing.

Purpose of the Study:

To investigate whether the McGurk illusion recalibrates auditory perception.
To determine if perceptual fusion during the McGurk illusion alters auditory boundaries between phonemes.

Main Methods:

Participants categorized speech stimuli (auditory and audiovisual) as /aba/, /ada/, or /aga/.
Functional magnetic resonance imaging (fMRI) recorded activity patterns in auditory cortices.
Analysis focused on neural correlates of perceptual recalibration following the McGurk illusion.

Main Results:

Following the McGurk illusion, auditory /aba/ stimuli were more frequently misperceived as /ada/.
A neural correlate of this recalibration was observed in the early auditory cortex.
Activity patterns for misperceived /aba/ (as /ada/) resembled those for actual /ada/ sounds.

Conclusions:

Experiencing the McGurk illusion leads to a recalibration of auditory perception.
The brain shifts neural representations of speech sounds following multisensory integration.
This suggests a dynamic adjustment of auditory processing based on conflicting sensory input.