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RAPID PUBLICATION Contribution of Irregular Semicircular Canal Merents
 

Summary: RAPID PUBLICATION
Contribution of Irregular Semicircular Canal Merents
to the Horizontal Vestibuloocular Response
During Constant Velocity Rotation
SUMMARY AND CONCLIJSIONS
I. The erects of constant anodal currents ( 100 PA) delivered
bilaterally to both labyrinths on the horizontal vestibuloocular
response ( VOR ) were studied in squirrel monkeys during steps of
angular velocity in the dark. We report that bilateral anodal
currents decreased eye velocity ~30~50% during the period of
galvanic stimulation without a change in the time constant of
VOR. The decrease in eye velocity, present during steps of angular
velocity, was not observed during sinusoidal head rotation at 0.3,
0.5, and 1 Hz. The results suggest that responses from irregular
vestibular aRerents influence VOR amplitude during constant ve-
locity rotation.
INTRODUCTION
Primary semicircular canal afferents are characterized by
a continuum of responsedynamics ranging from purely
tonic to purely phasictemporal properties (cf. Anastasio et

  

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

 

Collections: Biology and Medicine