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Related Concept Videos

Perception of Sound Waves01:01

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 frequency...
Hearing01:31

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.
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...
Perceiving Loudness, Pitch, and Location01:21

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 identifying...
Sensory Memory01:14

Sensory Memory

Sensory memory captures information from the environment in its original form for a very brief duration, just long enough to be exposed to visual, auditory, and other senses. This type of memory is detailed and rich but quickly lost unless certain strategies are employed to transfer it into short-term or long-term memory. Sensory information is continuously bombarding the human brain, yet only a small fraction is absorbed, as most of it does not significantly impact daily life. For instance,...
Chunking and Rehearsal in Sensory Memory01:22

Chunking and Rehearsal in Sensory Memory

Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of information more...

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Related Experiment Video

Updated: Jun 22, 2026

Making Sense of Listening: The IMAP Test Battery
11:25

Making Sense of Listening: The IMAP Test Battery

Published on: October 11, 2010

Auditory memory for timbre.

Denis McKeown1, David Wellsted

  • 1Institute of Psychological Sciences, University of Leeds, Leeds, England. d.mckeown@leeds.ac.uk

Journal of Experimental Psychology. Human Perception and Performance
|June 3, 2009
PubMed
Summary
This summary is machine-generated.

Recent auditory stimulation impacts sound processing. A new timbre memory model explains how frequency-specific interference from prior tones disrupts auditory discrimination tasks.

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Area of Science:

  • Auditory perception
  • Psychophysics
  • Cognitive neuroscience

Background:

  • Auditory context influences sound processing.
  • Understanding how recent auditory stimulation affects perception is crucial.

Purpose of the Study:

  • To investigate the impact of recent auditory stimulation on sound discrimination.
  • To explore frequency-specific disruption in auditory processing.

Main Methods:

  • Psychophysical experiments involving discrimination tasks with complex sounds.
  • Introduction of pure tone inducers at varying frequencies before target sounds.
  • Varying target component intensity (decrement/increment).

Main Results:

  • Discrimination performance was impaired when the inducing tone shared frequency with the target component.
  • Evidence for frequency-specific disruption in auditory processing.
  • Support for interference in auditory coding.

Conclusions:

  • Recent auditory stimulation, particularly tones of the same frequency, impairs subsequent sound discrimination.
  • A proposed timbre memory model (TMM) explains this disruption via channel-specific interference and attentional inhibition.
  • The findings highlight the role of memory traces in auditory perception.