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Hearing

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.

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Related Experiment Video

Updated: Jun 8, 2026

Mapping the After-effects of Theta Burst Stimulation on the Human Auditory Cortex with Functional Imaging

Mapping the After-effects of Theta Burst Stimulation on the Human Auditory Cortex with Functional Imaging

Published on: September 12, 2012

A diffusion tensor imaging study on the auditory system and tinnitus.

Alessandro Crippa¹, Cris P Lanting, Pim van Dijk

¹Johann Bernoulli Institute for Mathematics and Computer Science, University of Groningen, The Netherlands.

The Open Neuroimaging Journal

|October 6, 2010

Summary

This summary is machine-generated.

Tinnitus patients show increased white matter tract patency between the auditory cortex and amygdala. This diffusion tensor imaging (DTI) study reveals central nervous system changes in tinnitus.

Keywords:

Tinnitus connectivity patterns diffusion tensor imaging lateralization.

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Area of Science:

Neuroimaging
Auditory Neuroscience
Medical Physics

Background:

Tinnitus is a phantom auditory perception linked to central nervous system mechanisms.
Diffusion tensor imaging (DTI) enables in vivo analysis of white matter brain tracts.

Purpose of the Study:

To characterize white matter fiber tracts within the human auditory pathway using DTI.
To investigate auditory system connections with the amygdala in tinnitus.

Main Methods:

Employed a probabilistic DTI approach to map fiber tracts.
Quantified white matter patency using mean fractional anisotropy, weighted mean fractional anisotropy, and path strength.

Main Results:

Identified and characterized tracts from the inferior colliculus to the auditory cortex.
Found significantly increased white matter tract patency between the auditory cortex and amygdala in tinnitus patients compared to controls.

Conclusions:

Altered white matter integrity, particularly involving the auditory cortex-amygdala pathway, is associated with tinnitus.
DTI can reveal structural neural correlates of tinnitus pathophysiology.