APStracts 4:0236N, 1997.

Interdependence of Spatial Properties and Projection Patterns of Medial Vestibulospinal Tract Neurons in the Cat. S.I. Perlmutter, Y. Iwamoto , J.F. Baker, B.W. Peterson. Department of Physiology, Northwestern University School of Medicine, 303 E. Chicago Ave., Chicago, IL 60611.

APStracts 4:0236N, 1997.

ABSTRACT
Activity of vestibular nucleus neurons with axons in the ipsi- or contralateral medial vestibulospinal tract was studied in decerebrate cats during sinusoidal, whole-body rotations in many planes in three-dimensional space. Antidromic activation of axon collaterals distinguished between neurons projecting only to neck segments from those with collaterals to C6 and/or oculomotor nucleus. Secondary neurons were identified by monosynaptic activation following labyrinth stimulation. A three-dimensional maximum activation direction vector (MAD) summarized the spatial properties of 151/169 neurons.

Received 4 September 1996; accepted in final form 4 September 1997.
APS Manuscript Number J481-6.
Article publication pending J. Neurophysiol.
ISSN 1080-4757 Copyright 1997 The American Physiological Society.
Published in APStracts on 7 October 1997