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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...
Sound Waves: Interference00:53

Sound Waves: Interference

Sound waves can be modeled either as longitudinal waves, wherein the molecules of the medium oscillate around an equilibrium position, or as pressure waves. When two identical waves from the same source superimpose on each other, the combination of two crests or two troughs results in amplitude reinforcement known as constructive interference. If two identical waves, that are initially in phase, become out of phase because of different path lengths, the combination of crests with troughs...
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.
Equilibrium and Balance01:15

Equilibrium and Balance

The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
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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.
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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A Method for Tracking the Time Evolution of Steady-State Evoked Potentials
12:03

A Method for Tracking the Time Evolution of Steady-State Evoked Potentials

Published on: May 25, 2019

Regular patterns stabilize auditory streams.

Alexandra Bendixen1, Susan L Denham, Kinga Gyimesi

  • 1Department of General Psychology, Institute for Psychology, Hungarian Academy of Sciences, PO Box 398, H-1394 Budapest, Hungary. alexandra.bendixen@uni-leipzig.de

The Journal of the Acoustical Society of America
|January 12, 2011
PubMed
Summary
This summary is machine-generated.

Temporal regularities in sound patterns help the auditory system distinguish sound sources. Detecting these regularities stabilizes auditory streams, improving sound source segregation.

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Area of Science:

  • Auditory perception
  • Psychoacoustics
  • Auditory scene analysis

Background:

  • The auditory system separates complex sounds into distinct auditory objects, often representing individual sound sources.
  • Sound sources emit characteristic temporal patterns, which may serve as cues for source identification.

Purpose of the Study:

  • To investigate if temporal regularities in sound patterns are used as cues for distinguishing sound sources.
  • To determine the role of regularity detection in auditory stream segregation.

Main Methods:

  • Participants listened to tone sequences and indicated continuous perception of either one integrated sound stream or two segregated streams.
  • Regular temporal patterns were introduced in one or both streams in specific stimulus conditions.

Main Results:

  • The presence of regular patterns in one or both streams significantly prolonged the duration of perceived two-stream percepts.
  • Perception of single-stream percepts remained unaffected by the presence of temporal regularities.

Conclusions:

  • Temporal regularities are indeed utilized by the auditory system for scene analysis.
  • These regularities appear to stabilize auditory streams after they are initially formed by simpler acoustic cues.