Comparison of Five Levels of Motion Sickness Severity as the Basis for Grading Susceptibility PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Comparison of Five Levels of Motion Sickness Severity as the Basis for Grading Susceptibility PDF full book. Access full book title Comparison of Five Levels of Motion Sickness Severity as the Basis for Grading Susceptibility by Earl F. Miller (II). Download full books in PDF and EPUB format.
Author: Earl F. Miller (II)
Publisher:
ISBN:
Category : Coriolis force
Languages : en
Pages : 28
Get Book Here
Book Description
The Coriolis (motion) sickness susceptibility index (CSSI) of 275 healthy male subjects was calculated from data obtained by a standardized laboratory procedure at each of five specific levels of motion sickness severity, viz, frank sickness (FS), severe malaise (M III), moderate malaise (M IIA and M IIB), and mild malaise (M I). The stressor value (E factor) of a single standardized head movement associated with each rotational rate of the test chair was adjusted to yield an equivalent CSSI score independent of the endpoint selected. Close agreement among the CSSI scores obtained at each endpoint was found in intercorrelations, test-retest reliability coefficients (N = 30), and frequency distributions that reflected the orderliness and stability in the appearance, ramification, and intensification of the acute symptomatology evoked in progressing from M I to FS. The endpoint M IIA appeared, however, to yield the best balance between subject acceptability and test confidence, and was used without exception to calibrate the motion sickness susceptibility of 250 additional subjects. (Author).
Author: Earl F. Miller (II)
Publisher:
ISBN:
Category : Coriolis force
Languages : en
Pages : 28
Get Book Here
Book Description
The Coriolis (motion) sickness susceptibility index (CSSI) of 275 healthy male subjects was calculated from data obtained by a standardized laboratory procedure at each of five specific levels of motion sickness severity, viz, frank sickness (FS), severe malaise (M III), moderate malaise (M IIA and M IIB), and mild malaise (M I). The stressor value (E factor) of a single standardized head movement associated with each rotational rate of the test chair was adjusted to yield an equivalent CSSI score independent of the endpoint selected. Close agreement among the CSSI scores obtained at each endpoint was found in intercorrelations, test-retest reliability coefficients (N = 30), and frequency distributions that reflected the orderliness and stability in the appearance, ramification, and intensification of the acute symptomatology evoked in progressing from M I to FS. The endpoint M IIA appeared, however, to yield the best balance between subject acceptability and test confidence, and was used without exception to calibrate the motion sickness susceptibility of 250 additional subjects. (Author).
Author: Earl F. Miller II
Publisher:
ISBN:
Category : Motion sickness
Languages : en
Pages : 24
Get Book Here
Book Description
Author: Ashton Graybiel
Publisher:
ISBN:
Category : Acceleration (Physiology)
Languages : en
Pages : 20
Get Book Here
Book Description
A group of twelve persons selected only on the basis of their visual defects were exposed to stressful Coriolis accelerations under standardized conditions. All demonstrated differences in susceptibility to acute motion sickness that bore no relation to their rank order of visual deprivation. Insofar as comparison with a group of normal subjects was made possible, no significant differences in susceptibility were demonstrable. It was concluded that vision is not an essential but rather a secondary etiologic factor in the genesis of motion sickness. This is not incompatible with the fact that symptoms characteristic of motion sickness may be visually induced in the absence of 'motion.' (Author).
Author: Earl F. Miller (II)
Publisher:
ISBN:
Category : Coriolis force
Languages : en
Pages : 20
Get Book Here
Book Description
To measure the stressor stimulus effect of rotational velocity in terms of the number of the standardized head tilt movements required to evoke a common severity level of symptoms characterizing motion sickness, sixteen young healthy subjects were rotated in a laboratory (Stille) rotational chair at various velocities within a range suitable for each subject and the limits of 1.0 to 30.0 rpm. Standardized 90 degree head movements were executed at each test velocity until the preselected and quantitatively determined motion sickness endpoint of moderate (M IIA) or severe (M III) malaise was reached. When individual ability to make head movements without evoking symptoms was exceeded, the derived average stressor effect (E factor) of each head movement varied directly and, in log-log terms, linearly with rotational velocity. These data provide the basis for grading individual susceptibility to Coriolis (motion) sickness with a single numerical score as well as define the high rate of change of Coriolis stressor effect as a function of rotational velocity, which may find practical application for specifying rotational rates of space stations. (Author).
Author: Earl F Miller (II.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 23
Get Book Here
Book Description
The Coriolis (motion) sickness susceptibility index (CSSI) of 275 healthy male subjects was calculated from data obtained by a standardized laboratory procedure at each of five specific levels of motion sickness severity, viz, frank sickness (FS), severe malaise (M III), moderate malaise (M IIA and M IIB), and mild malaise (M I). The stressor value (E factor) of a single standardized head movement associated with each rotational rate of the test chair was adjusted to yield an equivalent CSSI score independent of the endpoint selected. Close agreement among the CSSI scores obtained at each endpoint was found in intercorrelations, test-retest reliability coefficients (N = 30), and frequency distributions that reflected the orderliness and stability in the appearance, ramification, and intensification of the acute symptomatology evoked in progressing from M I to FS. The endpoint M IIA appeared, however, to yield the best balance between subject acceptability and test confidence, and was used without exception to calibrate the motion sickness susceptibility of 250 additional subjects. (Author).
Author:
Publisher:
ISBN:
Category : Aviation medicine
Languages : en
Pages : 698
Get Book Here
Book Description
Author: Naval Aerospace Medical Research Laboratory
Publisher:
ISBN:
Category :
Languages : en
Pages : 516
Get Book Here
Book Description
Author: E. J. Lovesay
Publisher: CRC Press
ISBN: 1000162664
Category : Technology & Engineering
Languages : en
Pages : 583
Get Book Here
Book Description
This book is based on the proceedings of the Ergonomics Society's 1992 Annual Conference Birmingham, England, 7-10 April 1992. It contains papers, covering environmental studies, musculoskeletal studies, working postures and anthropometry, safety, and military ergonomics.
Author: North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 194
Get Book Here
Book Description
Author: Earl F. Miller II
Publisher:
ISBN:
Category : Vestibular function tests
Languages : en
Pages : 28
Get Book Here
Book Description
