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JOURNALOF NEUROPHYSIOLOGY Vol. 73, No. 5, May 1995. Printed in U.S.A.
 

Summary: JOURNALOF NEUROPHYSIOLOGY
Vol. 73, No. 5, May 1995. Printed in U.S.A.
Inertial Representation of Angular Motion in the Vestibular System of
Rhesus Monkeys. II. Otolith-Controlled Transformation That Depends
on an Intact Cerebellar Nodulus
DORA E. ANGELAKI AND BERNHARD J. M. HESS
Department of Surgery (Otolaryngology), University of Mississippi Medical Center, Jackson, Mississippi 392164505;
and Department of Neurology, University Hospital, Erich, CH-8091, Switzerland
SUMMARY AND CONCLUSIONS
1. We recently studied the spatial representation of angular mo-
tion signals in rhesus monkeys by examining the orientation of
postrotatory vestibuloocular responses during tilt of the head and
body relative to gravity after constant-velocity rotation about an
earth-vertical axis. We have reported that low-frequency angular
motion signals in the vestibuloocular reflex (VOR) of rhesus mon-
keys are spatially transformed such that they remain invariant rela-
tive to gravity. In the present study we examine the properties of
these inertial vestibular signals by employing similar stimulation
conditions in animals with either selective semicircular canal plug-
ging or selective lesions of cerebellar lobule X (nodulus) and

  

Source: Angelaki, Dora - Department of Anatomy and Neurobiology, Washington University in St. Louis

 

Collections: Biology and Medicine