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Related Concept Videos

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...
Perception01:28

Perception

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...
Parallel Processing01:20

Parallel Processing

The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
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.
Subconsciousness and No Awareness01:15

Subconsciousness and No Awareness

The concept of subconscious awareness refers to the processing of information below the level of conscious thought, which significantly influences both behaviors and decisions. It is also known as waking subconscious awareness. This complex level of cognition operates without the direct awareness of the individual, facilitating rapid and simultaneous handling of multiple information streams.
An illustrative example of subconscious processing is its role in problem-solving. Often, individuals...

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Related Experiment Video

Updated: Jun 4, 2026

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique
11:39

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique

Published on: September 7, 2022

Phasic auditory alerting improves visual conscious perception.

Flor Kusnir1, Ana B Chica, Manuel A Mitsumasu

  • 1INSERM-U 975, Centre de Recherche de l'Institut du Cerveau et de la Moëlle Epinière (CRICM) et Université Pierre et Marie Curie (UPMC), Groupe Hospitalier Pitié-Salpêtrière, Paris, France. anachica@ugr.es

Consciousness and Cognition
|February 26, 2011
PubMed
Summary
This summary is machine-generated.

Phasic auditory alerting significantly enhances conscious perception (CP) in healthy individuals. This finding suggests that auditory cues can improve how we consciously process visual information.

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Area of Science:

  • Cognitive Neuroscience
  • Psychology

Background:

  • Attention is considered a gateway to consciousness.
  • While endogenous attention may be independent of conscious perception (CP), exogenous orienting modulates CP.

Purpose of the Study:

  • To investigate the role of auditory alerting in modulating CP in neurologically intact observers.
  • To determine if auditory cues can influence conscious awareness of visual stimuli.

Main Methods:

  • A behavioral task was employed using near-threshold visual targets.
  • Phasic alerting tones were presented at unpredictable or predictable intervals before visual targets.

Main Results:

  • Phasic alertness was found to objectively and subjectively increase CP in normal observers.
  • This effect aligns with findings that alerting ameliorates spatial bias in visual neglect patients.

Conclusions:

  • Phasic auditory alerting enhances conscious perception in healthy individuals.
  • The alerting network may amplify fronto-parietal activity, facilitating stimulus entry into consciousness.