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Related Concept Videos

Auditory Perception01:17

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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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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Perceiving Loudness, Pitch, and Location01:21

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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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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.
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The information-processing theory of cognitive development centers on fundamental mental processes, including attention, memory, and problem-solving skills. Researchers in this field examine how cognitive abilities, such as working memory, evolve and influence children's overall development. Studies indicate that children with stronger working memory tend to excel in reading comprehension, math, and problem-solving compared to peers with less efficient memory skills. Low working memory is...
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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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Related Experiment Video

Updated: Aug 25, 2025

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique
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Intention-based predictive information modulates auditory deviance processing.

Andreas Widmann1,2, Erich Schröger1

  • 1Wilhelm Wundt Institute for Psychology, Leipzig University, Leipzig, Germany.

Frontiers in Neuroscience
|October 17, 2022
PubMed
Summary
This summary is machine-generated.

Brain responses to unexpected sounds differ when listeners produce the sounds themselves. Intention-based predictions can alter auditory processing, impacting mismatch negativity and P3a brain responses.

Keywords:
actionauditionintentionmismatch negativity (MMN)perceptionpredictionpredictive coding

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Area of Science:

  • Neuroscience
  • Auditory Perception
  • Cognitive Psychology

Background:

  • The human brain reacts strongly to sounds that violate auditory patterns.
  • Previous studies focused on externally produced deviant sounds.
  • Understanding self-produced sound processing is crucial for a complete picture of auditory perception.

Purpose of the Study:

  • To investigate brain responses to self-produced deviant sounds.
  • To compare brain responses to predictable versus unpredictable self-produced deviants.
  • To explore the influence of intention-based predictions on auditory processing.

Main Methods:

  • Event-related potential (ERP) study.
  • Listeners produced deviant sounds by pressing buttons.
  • Conditions included unpredictable and predictable button-sound associations.
  • Temporal principal component analysis was used to analyze ERPs.

Main Results:

  • N1 enhancement was similar across all deviant types, unaffected by intention.
  • Mismatch negativity (MMN) was absent for predictable deviants.
  • P3a was present for all deviants, largest for mispredicted ones.

Conclusions:

  • Intention-based predictions influence auditory processing differently across various neural responses.
  • Predictive processing theories need to account for the impact of self-generated actions.
  • The P3a response may reflect both auditory violations and intended sensory outcomes.