Proceedings of the Second International Symposium on Basic Environmental Problems of Man in Space

Proceedings of the Second International Symposium on Basic Environmental Problems of Man in Space PDF

Author: Hilding Bjurstedt

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 540

ISBN-13: 3709130328

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Organized by the International Astronautical Federation and the International Academy of Astronautics with the Support and Cooperation of UNESCO, the International Atomic Energy Agency, the WHO, the World Meteorological Organization, andthe International Telecommunication Union

The Inversion Illusion in Parabolic Flight: Its Probable Dependence on Otolith Function

The Inversion Illusion in Parabolic Flight: Its Probable Dependence on Otolith Function PDF

Author: Ashton Graybiel

Publisher:

Published: 1966

Total Pages: 24

ISBN-13:

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Observations were made on normal subjects and deaf persons with bilateral labyrinthine defects (L-D subjects) under three different conditions in parabolic flight: (1) free-floating, (2) restrained in a Fiberglas mold, and (3) 'standing' on the overhead during a motified parabola generating about -0.05 G unit. There were interindividual differences in the reactions among the normal but not among the L-D subjects. Some normal but none of the L-D subjects experienced a reversal of their personal orientation with regard to up-down under all three conditions. This 'reversal' was considered to have its genesis in the vestibular organs, probably the otolith apparatus. Our findings are in accord with Russian reports describing feelings of inversion among cosmonauts in orbital flight. Attention is called to the necessity of distinguishing between information furnished by touch-pressure, kinesthesis, and stereagnosis under ordinary conditions and agravic touch-pressure, agravic kinethesis, and agravic steragnosis. (Author).

Evaluation of Otolith Organ Function by Means of Ocular Counterrolling Measurements

Evaluation of Otolith Organ Function by Means of Ocular Counterrolling Measurements PDF

Author: Earl F. Miller (II)

Publisher:

Published: 1969

Total Pages: 24

ISBN-13:

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Measurements of ocular counterrolling by the photographic method provide specific and valid otolith function information. The precision of the test method has extended the usefulness of ocular counterrolling as an indicator of otolith function of individuals with severe macular destruction as well as normals subjected to conditions which act physiologically to deafferent these organs such as near weightlessness of aerospace flight. (Author).