Evidence Risks Gaps Tasks Reports
Explore Search
Task Neuro-Vestibular Examination During and After Spaceflight
Last Published:  07/31/19 10:05:33 AM (Central)
Task Book: Entry Unavailable
Principal Investigator: Reschke, Millard
Short Title: Vestibular Health
Responsible HRP Element: Human Health Countermeasures
Collaborating Org(s):
Other:
Funding Status: Active - Currently funded and in progress
Procurement Mechanism(s):
Solicited
Aims:
  • Examine the head position relative to the body and, if tilted look for the presence of an ocular tilt reaction.
     
  • Determine the subjective nonvisual vertical using the test of the finger. A deviation of the subjective vertical occurs in more than 90 % of all acute unilateral peripheral and central vestibular disorders.
     
  • Examine the subject for nystagmus when the gaze is straight-ahead or directed right, left, up, and down. Frenzel lenses help to differentiate between a peripheral vestibular spontaneous nystagmus that can be suppressed by visual fixation and a central fixation nystagmus that is present during fixation.
     
  • Perform positioning maneuver to determine if there is a positioning nystagmus or positioning vertigo, and also to differentiate between a BPPV and a central positional or positioning nystagmus.
     
  • Examine three different types of eye movements (smooth pursuit, saccades, gaze-holding function) for central eye movement disorders such as saccadic smooth pursuit, gaze-evoked nystagmus, disorder of saccades as well as impaired visual fixation suppression of the VOR. If patients with acute vertigo have central ocular motor disorders, this suggests a central origin.
     
  • Perform the head-impulse test as well as slow active head rotation addressing the question of a unilateral or bilateral functional deficit of the VOR.
     
  • Perform whole body rotation and whole-body translation to evaluate whether the subjective perception of motion by the semicircular canals and otoliths is accurate

Mappings
RiskRisk of Adverse Cognitive or Behavioral Conditions and Psychiatric Disorders
You are here!TaskNeuro-Vestibular Examination During and After Spaceflight
RiskRisk of Impaired Control of Spacecraft/Associated Systems and Decreased Mobility Due to Vestibular/Sensorimotor Alterations Associated with Spaceflight
You are here!TaskNeuro-Vestibular Examination During and After Spaceflight