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Head-only rotational testing in the elderly

J M Furmen1, J D Durrant

  • 1Department of Otolaryngology, University of Pittsburgh School of Medicine, Pennsylvania, USA. furman@vms.cis.pitt.edu

Journal of Vestibular Research : Equilibrium & Orientation
|October 15, 1998
PubMed
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Head-only rotational testing (HORT) successfully assesses the vestibuloocular reflex (VOR) in older adults. This noninvasive method is applicable to the elderly, with results comparable to younger individuals, indicating its potential for clinical use.

Area of Science:

  • Neuroscience
  • Ophthalmology
  • Gerontology

Background:

  • Head-only rotational testing (HORT) is a portable, noninvasive method for assessing the vestibuloocular reflex (VOR).
  • Limited data exist on HORT's applicability in the elderly, particularly concerning potential limitations in cervical range of motion.

Purpose of the Study:

  • To evaluate the feasibility of applying HORT to a cohort of healthy elderly subjects.
  • To compare VOR parameters obtained via HORT between elderly and young healthy control groups.

Main Methods:

  • HORT was administered to normal elderly and young control subjects.
  • Testing involved both active and passive head rotations, with and without visual fixation.
  • VOR parameters including gain and phase were analyzed.

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Main Results:

  • Elderly subjects' HORT responses were largely indistinguishable from young subjects.
  • Younger subjects exhibited slightly higher gain at 1 Hz.
  • Visual fixation enhanced VOR gain and reduced phase lead at lower frequencies.
  • Active and passive head rotations yielded similar VOR parameters in both age groups.

Conclusions:

  • HORT is a viable and easily applicable technique for assessing the VOR in the elderly population.
  • Findings support the use of HORT for evaluating VOR function across different age groups.
  • Future research should explore HORT's utility in elderly individuals with VOR impairments.