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Related Concept Videos

The Vestibular System01:29

The Vestibular System

The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.
Equilibrium and Balance01:15

Equilibrium and Balance

The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
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...
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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.

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Stochastic Noise Application for the Assessment of Medial Vestibular Nucleus Neuron Sensitivity In Vitro
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Stochastic Noise Application for the Assessment of Medial Vestibular Nucleus Neuron Sensitivity In Vitro

Published on: August 28, 2019

Does caloric vestibular stimulation modulate tinnitus?

David M Baguley1, Richard Knight, Lucy Bradshaw

  • 1Department of Audiology (94), Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge CB2 2QQ, United Kingdom. dmb29@cam.ac.uk

Neuroscience Letters
|February 8, 2011
PubMed
Summary
This summary is machine-generated.

Caloric vestibular stimulation (CVS) did not significantly alter tinnitus pitch or intensity in patients. This suggests that the brain networks activated by CVS are separate from those involved in tinnitus perception.

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Published on: January 7, 2019

Area of Science:

  • Neuroscience
  • Otolaryngology
  • Audiology

Background:

  • Caloric vestibular stimulation (CVS) transiently modulates cognitive functions.
  • CVS activates a multimodal vestibular cortical network, including the temporal-parietal cortex, anterior cingulate cortex, and insular cortex.
  • The effect of CVS on tinnitus, a common auditory symptom, remains unexplored.

Purpose of the Study:

  • To investigate the effect of CVS on tinnitus perception.
  • To determine if CVS influences tinnitus pitch and intensity.

Main Methods:

  • Twenty patients with tinnitus undergoing vestibular tests received ipsilateral CVS (44°C H2O).
  • Tinnitus pitch and intensity were rated using visual analogue scales (VAS) immediately before and after CVS.
  • One patient was excluded due to central vestibular abnormalities.

Main Results:

  • Mean VAS pitch changed from 5.65 to 5.28 (p=0.13).
  • Mean VAS intensity changed from 5.21 to 4.43 (p=0.06).
  • Neither change reached statistical significance, indicating no consistent influence of CVS on tinnitus.

Conclusions:

  • CVS does not appear to consistently influence tinnitus perception.
  • The study suggests that tinnitus pitch and intensity are independent of the multimodal vestibular network activated by CVS.