<b>Assessment of the vestibuloocular reflex in fighter pilots with the video head impulse test</b>

Maia, Francisco Carlos Zuma e; Albernaz, Pedro Luiz Mangabeira; Cal, Renato Valério Rodrigues; Brusco, Thaísa Rodrigues; Costa, Sady Seleiman da

doi:10.3109/00016489.2015.1017889

Cited by 2 publications

(3 citation statements)

References 9 publications

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“…The results imply that the isolated lower gain reported in a previous study (10) for the vertical canals was not an incidental finding. Statistical significance may have not been achieved due to the limited number of pilots tested (14 in total).…”

Section: Discussionsupporting

confidence: 58%

“…The only previous study that tested the rVOR in aircraft pilots using head impulses (Headimpulse Test, HIT) observed lower gain values for the vertical canals but with significance limited to the left posterior canal. The study, however, only measured 14 pilots, of which only six of them had a large number of hours in flight (10).…”

Section: Introductionmentioning

confidence: 99%

“…These discrepancies may be related to the differences in the motion stimuli experienced by pilots (9,10). The magnitude of angular and linear accelerations experienced by a fighter pilot, an aerobatic pilot, or a civil pilot varies considerably.…”

Section: Introductionmentioning

confidence: 99%

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Reduction of the vertical vestibular-ocular reflex in military aircraft pilots exposed to tactical, high-performance flight

et al. 2023

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BackgroundExposure to high-performance flight stresses the vestibular system and may lead to adaptive changes in the vestibular responses of pilots. We investigated the vestibular-ocular reflex of pilots with different histories of flight exposure both with respect to hours of flight and flight conditions (tactical, high-performance vs. non-high-performance) to evaluate if and how adaptative changes are observable.MethodsWe evaluated the vestibular-ocular reflex of aircraft pilots using the video Head Impulse Test. In study 1, we assessed three groups of military pilots: Group 1 had 68 pilots with few hours of flight experience (<300 h) in non-high-performance flight conditions; Group 2 had 15 pilots with many hours of flight (>3,000 h) and regularly flying tactical, high-performance flight conditions; Group 3 had eight pilots with many hours of flight (>3,000 h) but not exposed to tactical, high-performance flight conditions. In study 2, four trainee pilots were followed up and tested three times over a 4-year period: (1) <300 h of flight on civil aircraft; (2) shortly after exposure to aerobatic training and with <2,000 h of overall flight; and (3) after training on tactical, high-performance aircraft (F/A 18) and for more than 2,000 h of flight.ResultsStudy 1: Pilots of tactical, high-performance aircrafts (Group 2) had significantly lower gain values (p < 0.05) as compared to Groups 1 and 3, selectively for the vertical semicircular canals. They also had a statistically (p = 0.022) higher proportion (0.53) of pathological values in at least one vertical semicircular canal as compared to the other groups. Study 2: A statistically significant (p < 0.05) decrease in the rVOR gains of all vertical semicircular canals, but not of the horizontal canals, was observed. Two pilots had a pathological value in at least one vertical semicircular canal in the third test.DiscussionThe results evidence a decrease in the gain of the vestibular-ocular reflex as measured with the video head impulse test for the vertical canals. This decrease appears to be associated with the exposure to tactical, high-performance flight rather than with the overall flight experience.

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Section: Discussionsupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

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Reduction of the vertical vestibular-ocular reflex in military aircraft pilots exposed to tactical, high-performance flight

et al. 2023

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Reliability of Vestibular Perceptual Threshold Testing About the Yaw Axis

Lee

Shayman

et al. 2020

Ear &Amp; Hearing

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Objectives: Vestibular reflexes have traditionally formed the cornerstone of vestibular evaluation, but perceptual tests have recently gained attention for use in research studies and potential clinical applications. However, the unknown reliability of perceptual thresholds limits their current importance. This is addressed here by establishing the test-retest reliability of vestibular perceptual testing. Design: Perceptual detection thresholds to earth-vertical, yaw-axis rotations were collected in 15 young healthy people. Participants were tested at two time intervals (baseline, 5 to 14 days later) using an adaptive psychophysical procedure. Results: Thresholds to 1 Hz rotations ranged from 0.69 to 2.99°/s (mean: 1.49°/s; SD: 0.63). They demonstrated an excellent intraclass correlation (0.92; 95% confidence interval: 0.77 to 0.97) with a minimum detectable difference of 0.45°/s. Conclusions: The excellent test-retest reliability of perceptual vestibular testing supports its use as a research tool and motivates further exploration for its use as a novel clinical technique.

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Assessment of the vestibuloocular reflex in fighter pilots with the video head impulse test

Abstract: There were significantly low gain values (p < 0,013) only in the left posterior semicircular canal in the control group as compared with the subject groups. However, there were no significant differences in gain values between the two groups of the active pilots.

Cited by 2 publications

References 9 publications

Reduction of the vertical vestibular-ocular reflex in military aircraft pilots exposed to tactical, high-performance flight

Reduction of the vertical vestibular-ocular reflex in military aircraft pilots exposed to tactical, high-performance flight

Reliability of Vestibular Perceptual Threshold Testing About the Yaw Axis

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