Journal of Applied Physiology Add DOIs to your references at manuscript stage!
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 73: 121S-131S, 1992;
8750-7587/92 $5.00
This Article
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Cohen, B.
Right arrow Articles by Yakushin, S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Cohen, B.
Right arrow Articles by Yakushin, S.

Journal of Applied Physiology, Vol 73, Issue 2 121S-131S, Copyright © 1992 by American Physiological Society

ARTICLES

Vestibuloocular reflex of rhesus monkeys after spaceflight

B. Cohen, I. Kozlovskaya, T. Raphan, D. Solomon, D. Helwig, N. Cohen, M. Sirota and S. Yakushin
Department of Neurology, Mount Sinai School of Medicine, New York 10029.

The vestibuloocular reflex (VOR) of two rhesus monkeys was recorded before and after 14 days of spaceflight. The gain (eye velocity/head velocity) of the horizontal VOR, tested 15 and 18 h after landing, was approximately equal to preflight values. The dominant time constant of the animal tested 15 h after landing was equivalent to that before flight. During nystagmus induced by off-vertical axis rotation (OVAR), the latency, rising time constant, steady-state eye velocity, and phase of modulation in eye velocity and eye position with respect to head position were similar in both monkeys before and after flight. There were changes in the amplitude of modulation of horizontal eye velocity during steady-state OVAR and in the ability to discharge stored activity rapidly by tilting during postrotatory nystagmus (tilt dumping) after flight: OVAR modulations were larger, and tilt dumping was lost in the one animal tested on the day of landing and for several days thereafter. If the gain and time constant of the horizontal VOR change in microgravity, they must revert to normal soon after landing. The changes that were observed suggest that adaptation to microgravity had caused alterations in way that the central nervous system processes otolith input.


This article has been cited by other articles:


Home page
 J. Neurophysiol.Home page
S. B. Yakushin, Y. Xiang, B. Cohen, and T. Raphan
Dependence of the Roll Angular Vestibuloocular Reflex (aVOR) on Gravity
J Neurophysiol, November 1, 2009; 102(5): 2616 - 2626.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
C. Abe, K. Tanaka, C. Awazu, and H. Morita
Galvanic vestibular stimulation counteracts hypergravity-induced plastic alteration of vestibulo-cardiovascular reflex in rats
J Appl Physiol, October 1, 2009; 107(4): 1089 - 1094.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
Y. Xiang, S. B. Yakushin, B. Cohen, and T. Raphan
Modeling Gravity-Dependent Plasticity of the Angular Vestibuloocular Reflex With a Physiologically Based Neural Network
J Neurophysiol, December 1, 2006; 96(6): 3349 - 3361.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online