Wesleyan University Studies of Motion Sickness: III. The Effects of Various Accelerations Upon Sickness Rates

Alexander, S. J.; Cotzin, M.; Hill, C. J.; Ricciuti, E. A.; Wendt, G. R.

doi:10.1080/00223980.1945.9712754

Cited by 21 publications

(4 citation statements)

References 2 publications

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“…Similar to the present study of illness caused by roll and pitch oscillation, Alexander et al ( 1 ) found that with vertical oscillations, an increase in the magnitude of motion did not always increase the incidence of vomiting. Several other studies involving vertical oscillation have found increased sickness with increased magnitudes of oscillation.…”

Section: Discussionsupporting

confidence: 81%

“…With vertical oscillation at four frequencies (0.22, 0.27, 0.37, and 0.53 Hz), Alexander et al ( 1 ) found that an increase in the magnitude of motion (from 1.96 to 6.38 ms 2 2 ) did not always result in an increase in the incidence of vomiting. At each frequency, the lowest magnitudes produced the least vomiting and the highest magnitudes produced more vomiting, but the intermediate magnitudes produced the greatest…”

mentioning

confidence: 97%

“…The vomiting incidence reported by Alexander et al ( 1 ), McCauley et al ( 16 ), and Lawther and Griffi n ( 12 ) were used to calculate a frequency weighting for vertical oscillation by Lawther and Griffi n ( 13 ) and was defi ned in British Standard 6841 ( 3 ) as W f . The frequency weighting suggests a 1 6 dB per octave increase in sensitivity with increasing frequency from 0.1 to 0.125 Hz, equal sensitivity to acceleration between 0.125 and 0.25 Hz, and 12 dB per octave decrease in sensitivity with increasing frequency from 0.25 to 0.5 Hz.…”

mentioning

confidence: 99%

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Motion Sickness: Effect of the Magnitude of Roll and Pitch Oscillation

Joseph¹,

Griffin²

2008

asem

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Section: Discussionsupporting

confidence: 81%

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confidence: 97%

mentioning

confidence: 99%

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Motion Sickness: Effect of the Magnitude of Roll and Pitch Oscillation

Joseph¹,

Griffin²

2008

asem

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“…Vibration, in particular, may have affected visual acuity, in which the greatest impairment occurs at 10 to 25 Hz (Hornick, 1973). Lower frequencies (between 0.12 and 0.4 Hz) have been found to be associated with inducing motion sickness symptoms McCauley & Kennedy, 1976;Alexander, Cotzin, Hill, Ricciuti, & Wendt, 1945). The effects of vibration on manual dexterity as measured by tracking tasks showed that the greatest number of errors occurred at 5 to 11 Hz (Buckhout, 1964).…”

Section: Discussionmentioning

confidence: 99%

The Effects of the Command and Control Vehicle (C2V) Operational Environment on Soldier Health and Performance

Cowings¹,

Toscano²,

Deroshia³

et al. 1999

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Approved for public release; distribution is unlimited. AbstractThe command and control vehicle (C2V) was developed to support U.S. Army tactical operation centers in heavy forces. The requirements for the C2V stipulate that it must support mobile operations and that it must support command and control (C2) from within the confines of the vehicle. However, in early testing, some human operators exhibited motion sickness during moving operations. As a result, the Human Research and Engineering Directorate of the U.S. Army Research Laboratory, in cooperation with the National Aeronautics and Space Administration's Life Sciences Division, was directed to perform a study to quantify the incidence and severity of motion sickness and any associated performance decrement. The study would discriminate between motion effects in the C2V in parked, moving, and short halt in each seat in three seat configurations.Twenty-four soldiers were exposed to each of 12 seats (four seats in three vehicle configurations) for a 4-hour "cell." During a cell, subjects completed a motion sickness and mood scale and the Delta cognitive battery. Half the subjects were also instrumented to record physiological correlates of motion sickness. Each cell included an initial (parked) administration of the test batteries followed by two test batteries while moving and three test batteries during short halts.Fifty-five percent of the subjects reported an average motion sickness score, indicating moderate to severe symptoms. Symptoms were not mitigated by short halts. One subject was withdrawn from the study because of severe and persistent symptoms.Performance was significantly worse during moving operations than in parked, with a partial recovery during short halts. Performance degradation was comparable to blood alcohol equivalencies at or above 0.08% in 35% of the soldiers during movement and 22% during short halts.There was no significant difference between seat or vehicles in any of the measurements. CONTENTS

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Characteristics of the Provocative Motion Stimuli

Dobie

2019

Motion Sickness

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Wesleyan University Studies of Motion Sickness: III. The Effects of Various Accelerations Upon Sickness Rates

Cited by 21 publications

References 2 publications

Motion Sickness: Effect of the Magnitude of Roll and Pitch Oscillation

Motion Sickness: Effect of the Magnitude of Roll and Pitch Oscillation

The Effects of the Command and Control Vehicle (C2V) Operational Environment on Soldier Health and Performance

Characteristics of the Provocative Motion Stimuli

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