Accession Number:

AD0617754

Title:

COMPARATIVE EFFECTS OF PROLONGED ROTATION AT 10 RPM ON POSTURAL EQUILIBRIUM IN VESTIBULAR NORMAL AND VESTIBULAR DEFECTIVE HUMAN SUBJECTS,

Descriptive Note:

Corporate Author:

NAVAL SCHOOL OF AVIATION MEDICINE PENSACOLA FLA

Personal Author(s):

Report Date:

1965-03-23

Pagination or Media Count:

24.0

Abstract:

As a means of better understanding the role of the vestibular organs in relation to ataxic responses to prolonged rotation, two contrasting groups of subjects were studied to 1 determine quantitatively to what extent two visually-enhanced postural equilibrium test performances of labyrinthine defective subjects L-Ds on a single rail of optimum difficulty become disturbed along the time axis of rotation Experiment A, and 2 compare the performances of L-Ds with normals in terms of postrotation effects as studied with a new standarized ataxia test battery Experiment B. Rotation-induced ataxia was superimposed to an appreciable extend upon the previously present and characteristic vestibular ataxia in the L-Ds Exp. A, and in Exp. B, upon cessation, there were significant decrements on all Test Battery performances of the normal group, whereas in the L-D group significant decrements were observed only on the two visually-enhanced tests. Other findings, which were considered tentative, are discussed in terms of several unresolved methodological problems in such experiments. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE