Related Experiment Video
Updated: Aug 7, 2026

Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction
Published on: August 30, 2019
Relationship between the affected ear in benign paroxysmal positional vertigo and habitual head-lying side during
B O Cakir1, I Ercan, Z A Cakir
11st Department of Otorhinolaryngology-Head and Neck Surgery, Sisli Etfal Research and Training Hospital, Istanbul, Turkey. burak_cakir@hotmail.com
Objective:
To assess the association between the habitual head position during bedrest and the affected ear in benign paroxysmal positional vertigo (BPPV).
Study Design:
Prospective trial of patients with active BPPV of the posterior semicircular canal, confirmed on physical examination.
Methods:
Seventy-five patients were asked to explain the head position and lying side they were accustomed to before falling asleep in bed.
Results:
Fifty patients (67 per cent) habitually adopted a lateral head position during bedrest. The ear affected by BPPV was found to be consistent with the head-lying side during bedrest in 43 cases (86 per cent) (29 cases for the right ear and 14 cases for the left ear).
Conclusion:
Habitual lateral head-positioning during bedrest can be a major factor leading to the development of BPPV in the ipsilateral ear.
Related Concept Videos
Equilibrium and Balance
Anatomical Positions
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...
