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Related Concept Videos

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.
Introduction to Special Senses01:26

Introduction to Special Senses

Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive functions.
Neuroplasticity01:01

Neuroplasticity

Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
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...
Tactile and Chemical Senses01:27

Tactile and Chemical Senses

Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex. This...
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...

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Related Experiment Video

Updated: Jun 27, 2026

Data Acquisition and Analysis In Brainstem Evoked Response Audiometry In Mice
08:51

Data Acquisition and Analysis In Brainstem Evoked Response Audiometry In Mice

Published on: May 10, 2019

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Auditory brainstem responses as a biomarker for cognition.

Yasmeen Hamza1,2, Ye Yang3, Janie Vu3

  • 1Center for Hearing Research, Otolaryngology-Head and Neck Surgery, University of California Irvine, Irvine, CA, USA. y.hamza@soton.ac.uk.

Communications Biology
|December 20, 2024
PubMed
Summary

Auditory brainstem responses (ABR) show potential as a biomarker for age-related cognitive decline. ABR wave V amplitude and latency correlate with cognitive function, particularly in older adults, aiding diagnosis and treatment.

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Last Updated: Jun 27, 2026

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Area of Science:

  • Neuroscience
  • Gerontology
  • Biomarkers

Background:

  • Age-related cognitive decline necessitates reliable, non-invasive biomarkers for diagnosis and management.
  • Previous research indicated a link between auditory brainstem responses (ABR) and cognitive function in aging macaques.

Purpose of the Study:

  • To investigate the association between ABR measures and cognitive function in a human cohort across a wide age range.
  • To determine if ABR can serve as a clinical biomarker for age-related cognitive decline.

Main Methods:

  • 118 human participants (18-92 years) underwent cognitive assessments and ABR testing.
  • Statistical analyses, including age-adjusted models and receiver-operating-characteristic (ROC) analysis, were performed.

Main Results:

  • Cognition was associated with age and hearing, primarily driven by age.
  • After age adjustment, ABR wave V amplitude and latency significantly correlated with cognitive function.
  • The ABR-cognition link was more pronounced in older individuals and for language-dependent cognitive tasks.
  • ROC analysis demonstrated high accuracy for ABR wave V amplitude in identifying good cognitive performers and latency for poor performers.

Conclusions:

  • Auditory brainstem responses show significant associations with cognitive function in humans, independent of age.
  • ABR measures, particularly wave V amplitude and latency, hold clinical potential as accessible biomarkers for diagnosing and monitoring age-related cognitive decline.