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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.
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...
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.
Physical Assessment of the Respiratory Tract III: Percussion01:29

Physical Assessment of the Respiratory Tract III: Percussion

The respiratory system, fundamental to life, consists of complex structures responsible for gas exchange. The percussion assessment is critical to understanding this system's health and functionality. This non-invasive assessment technique allows healthcare providers to evaluate the density or aeration of the lungs, thereby identifying potential abnormalities.
Percussion in Respiratory Assessment
Percussion evaluates underlying tissue composition with audible and tactile vibrations,...
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...
Heart Sounds01:15

Heart Sounds

Heart sounds are generated by the turbulence in blood flow due to the closing of heart valves. These sounds are best perceived slightly away from the valves, where the blood flow disseminates the sound.
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V) valves at the...

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Related Experiment Video

Updated: Jun 19, 2026

A Protocol for the Administration of Real-Time fMRI Neurofeedback Training
07:05

A Protocol for the Administration of Real-Time fMRI Neurofeedback Training

Published on: August 24, 2017

[Tinnitus].

Jukka Ylikoski1

  • 1Helsinki Ear Institute.

Duodecim; Laaketieteellinen Aikakauskirja
|October 29, 2009
PubMed
Summary

Tinnitus, a symptom of auditory dysfunction, often triggers stress, sleep issues, and depression. Treatment should target tinnitus annoyance using Tinnitus Retraining Therapy (TRT) principles, potentially including sleep and antidepressant therapies.

Area of Science:

  • Neuroscience
  • Otolaryngology
  • Psychiatry

Context:

  • Tinnitus arises from auditory system dysfunction and hyperactive central auditory pathways.
  • The auditory system's connection to the limbic system can induce stress, sleep disturbances, distress, and depression.

Purpose:

  • To outline the neurophysiological basis of tinnitus and its psychological comorbidities.
  • To emphasize that tinnitus treatment should focus on mitigating annoyance, not eliminating the sound sensation.

Summary:

  • Tinnitus involves hyperactivity in central auditory networks, linked to the limbic system, causing stress and mood disorders.
  • Effective tinnitus management involves Tinnitus Retraining Therapy (TRT) principles: diagnostics, counseling, and sound therapy.
  • Adjunctive therapies like sleep and antidepressant treatments may be necessary for some patients.

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A Low Cost Setup for Behavioral Audiometry in Rodents

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Semi-Automated Analysis of Peak Amplitude and Latency for Auditory Brainstem Response Waveforms Using R

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A Low Cost Setup for Behavioral Audiometry in Rodents

Published on: October 16, 2012

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Semi-Automated Analysis of Peak Amplitude and Latency for Auditory Brainstem Response Waveforms Using R

Published on: December 9, 2022

Impact:

  • Highlights the importance of a holistic approach to tinnitus management, addressing both auditory and psychological aspects.
  • Provides a framework for clinicians to optimize tinnitus treatment strategies.
  • Underscores the need for patient-centered care focusing on reducing tinnitus-related distress.