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Related Concept Videos

Auditory Perception01:17

Auditory Perception

408
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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The Cochlea01:13

The Cochlea

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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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Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

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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.
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...
297
Hearing01:31

Hearing

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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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The Auditory Ossicles01:11

The Auditory Ossicles

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The auditory ossicles of the middle ear transmit sounds from the air as vibrations to the fluid-filled cochlea. The auditory ossicles consist of two malleus (hammer) bones, two incus (anvil) bones, and two stapes (stirrups), one on each side. These bones develop during the fetal stage and are the ones to ossify first. They are fully mature at birth and do not grow afterward.
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
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Perception of Sound Waves01:01

Perception of Sound Waves

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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.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
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Related Experiment Video

Updated: Aug 9, 2025

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
04:32

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention

Published on: December 20, 2024

366

Bone conduction facilitates self-other voice discrimination.

Pavo Orepic1, Oliver Alan Kannape1,2, Nathan Faivre3

  • 1Laboratory of Cognitive Neuroscience, Neuro-X Institute and Brain Mind Institute, Faculty of Life Sciences, École polytechnique fédérale de Lausanne (EPFL), 1202 Geneva, Switzerland.

Royal Society Open Science
|February 23, 2023
PubMed
Summary
This summary is machine-generated.

Hearing your own voice sounds strange due to missing bone conduction. Adding vibrotactile stimulation improved self-voice identification, showing voice perception is multi-modal.

Keywords:
bone conductionfamiliar voicemulti-sensory integrationself-other voice discriminationself-other voice spaceself-voice

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Area of Science:

  • Psychology
  • Neuroscience
  • Acoustics

Background:

  • Self-voice perception is crucial for self-consciousness but poorly understood.
  • Recordings sound unfamiliar due to the absence of bone conduction during natural voice perception.
  • This auditory-tactile discrepancy has hindered self-voice research.

Purpose of the Study:

  • To investigate the role of bone conduction in self-voice perception.
  • To determine how vibrotactile stimulation influences self-voice identification.
  • To explore the interplay between acoustic cues and familiarity in distinguishing one's own voice.

Main Methods:

  • Three studies were conducted using voice morphing and psychophysical methods.
  • Experimental self-voice stimuli were augmented with bone-conducted vibrotactile stimulation.
  • Stimuli were presented via bone conduction and air conduction for comparison.

Main Results:

  • Bone conduction significantly improved self-other voice discrimination compared to air conduction.
  • Vocal differences enhanced general voice discrimination.
  • Self-voices were more confused with familiar than unfamiliar voices, irrespective of acoustic similarity.

Conclusions:

  • Concomitant vibrotactile stimulation enhances auditory self-identification.
  • Self-voice perception is a fundamentally multi-modal construct, integrating auditory and tactile information.
  • Understanding these multi-modal aspects is key to advancing research on self-consciousness.