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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.
Auditory Pathway01:15

Auditory Pathway

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 the...
The Cochlea01:13

The Cochlea

The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
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...
Anatomy of the Ear01:16

Anatomy of the Ear

Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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...

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Related Experiment Video

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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

Auditory brain stem response to complex sounds: a tutorial.

Erika Skoe1, Nina Kraus

  • 1Department of Communication Sciences, Northwestern University, Evanston, Illinois 60208, USA.

Ear and Hearing
|January 20, 2010
PubMed
Summary
This summary is machine-generated.

Complex auditory brain stem responses (cABRs) offer insights into how the brain processes sounds like speech and music. This method assesses auditory processing and cognitive functions, aiding research in various populations.

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Area of Science:

  • Neuroscience
  • Auditory Neuroscience
  • Cognitive Science

Background:

  • Complex auditory brain stem responses (cABRs) are crucial for understanding subcortical auditory processing.
  • Behaviorally relevant sounds, such as speech and music, are processed in the brain via these responses.
  • Temporal and spectral sound characteristics are preserved in cABRs, enabling assessment of auditory processing.

Purpose of the Study:

  • To provide a comprehensive overview of the methodology for collecting and analyzing cABRs.
  • To highlight the utility of cABRs in studying auditory processing and experience-dependent plasticity.
  • To guide clinicians and researchers in integrating cABRs into their work.

Main Methods:

  • Detailed explanation of the methodological approach for collecting cABRs.
  • Guidance on analyzing cABRs to interpret auditory processing.
  • Focus on the application of cABRs for specific research and clinical questions.

Main Results:

  • cABRs offer a window into subcortical processing of complex sounds.
  • Subcortical auditory function is dynamic and interacts with cognitive processes.
  • Experience-dependent plasticity shapes sensory perception, observable via cABRs.

Conclusions:

  • cABRs are valuable for assessing auditory processing, cognitive function, and experience-dependent plasticity.
  • This technique is useful for studying diverse populations, including musicians and individuals with hearing or language disorders.
  • The tutorial aims to facilitate the clinical and research application of cABRs.