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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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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...
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Auditory Pathway01:15

Auditory Pathway

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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.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
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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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Factors Affecting Perception01:25

Factors Affecting Perception

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Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
An illustrative example of a perceptual set is the scenario where an airline pilot told...
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Perception01:28

Perception

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Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
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A Two-interval Forced-choice Task for Multisensory Comparisons
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Computational and neurophysiological principles underlying auditory perceptual decisions.

Taku Banno1,2, Jean-Hugues Lestang1,2, Yale E Cohen1,3,4

  • 1Departments of Otorhinolaryngology, University of Pennsylvania, G12A Stemmler, 3450 Hamilton Walk, Philadelphia, PA 19104, United States.

Current Opinion in Physiology
|August 25, 2020
PubMed
Summary
This summary is machine-generated.

Understanding auditory perception requires knowing how the brain processes sound mixtures. This review examines how neural activity in the brain relates to auditory perception and decision-making.

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Area of Science:

  • Auditory neuroscience
  • Neuroscience of perception

Background:

  • The brain transforms complex auditory stimuli into distinct perceptions via neurocomputational processes.
  • Key processes include Gestalt grouping, categorization, attention, and perceptual decision-making.
  • The precise link between neural activity and auditory perception remains unclear.

Purpose of the Study:

  • To review the roles of cortical and subcortical regions in auditory perceptual decisions.
  • To emphasize studies linking behavior and neural activity.
  • To identify challenges in understanding the neural basis of auditory perception.

Main Methods:

  • Review of existing scientific literature.
  • Emphasis on studies employing simultaneous behavioral and neural activity measurements.
  • Analysis of neurocomputational processes in auditory perception.

Main Results:

  • Cortical and subcortical regions contribute to auditory perceptual decisions.
  • Simultaneous measurement of behavior and neural activity is crucial.
  • Significant gaps remain in understanding the causal relationship between neural activity and perception.

Conclusions:

  • Further research is needed to elucidate the neural mechanisms underlying auditory perception.
  • Addressing current challenges is essential for advancing the field.
  • A deeper understanding requires integrating behavioral and neural data.