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Related Concept Videos

Equilibrium and Balance01:15

Equilibrium and Balance

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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...
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The Vestibular System01:29

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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.
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Major Somatic Sensory Pathways01:28

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Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
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Auditory Perception01:17

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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...
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Indirect Motor Pathways01:22

Indirect Motor Pathways

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The indirect motor or extrapyramidal pathways originate in the brainstem, the lower portion of the brain that connects it to the spinal cord. They consist of several distinct tracts, each with specialized functions. The four main tracts of the indirect motor pathways are the vestibulospinal tract, the reticulospinal tract, the tectospinal tract, and the rubrospinal tract.
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Related Experiment Video

Updated: Jan 13, 2026

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
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Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane

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Rebalancing the Inner Ear: Tracking Epley's Maneuver Success Through Subjective Visual Vertical.

C R K Balaji1, Sooryakumar Meenakshi Sundaram1, Sivaranjani Marimuthu1

  • 1Department of ENT, Head and Neck Surgery, SRM Medical College, Hospital and Research Center, SRM Institute of Science and Technology, Chengalpattu, Tamil Nadu, India.

Journal of Pharmacy & Bioallied Sciences
|January 12, 2026
PubMed
Summary
This summary is machine-generated.

The Epley maneuver effectively treats benign paroxysmal positional vertigo (BPPV) of the posterior canal. Subjective Visual Vertical (SVV) testing objectively confirms treatment success and utricular function.

Keywords:
BPPVEpley maneuverposterior canalsubjective visual verticalvestibular function

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Area of Science:

  • Neurology
  • Otolaryngology
  • Vestibular Science

Background:

  • Benign paroxysmal positional vertigo (BPPV) is a common vestibular disorder, primarily impacting the posterior semicircular canal.
  • The Epley maneuver is the standard first-line treatment, but objective measures for success are limited.
  • Subjective Visual Vertical (SVV) can assess utricular function and potentially quantify treatment outcomes.

Purpose of the Study:

  • To assess the Epley maneuver's effectiveness for posterior canal BPPV.
  • To utilize SVV as an objective measure of treatment efficacy.

Main Methods:

  • A prospective observational study included 143 patients (20-65 years) diagnosed with posterior canal BPPV.
  • Dix-Hallpike maneuver confirmed BPPV, followed by pre- and post-Epley maneuver SVV testing.
  • Outcomes measured included SVV deviation, recurrence rates, and correlation with symptom duration and relief.

Main Results:

  • The Epley maneuver significantly improved SVV deviation in static and dynamic positions (P < 0.05).
  • Recurrence rate was low at 2.1%, with symptom relief occurring in an average of 14.59 ± 6.28 days.
  • A strong positive correlation (r = 0.706) was observed between symptom duration and dynamic clockwise SVV deviation.

Conclusions:

  • The Epley maneuver demonstrates high efficacy and low recurrence for posterior canal BPPV.
  • SVV is a valuable objective tool for evaluating utricular function and monitoring treatment response in BPPV patients.