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Changesin the dynamicsof the vertical vestibulo-ocularreflex due to linear accelerationin the frontal planeof the cat
 

Summary: Changesin the dynamicsof the vertical vestibulo-ocularreflex
due to linear accelerationin the frontal planeof the cat
D.B. Angelakil, J.H. Andersonl, and B.W. Blakley2
1 Departmentsof Otolaryngologyand Physiology,University of Minnesota, Minneapolis, MN 55455,USA
2 Department of Otolaryngology,Wayne StateUniversity, Detroit, MI, USA
ReceivedDecember5, 1989/ AcceptedDecember5, 1990
Exp Brain Res(1991)86 27-39
Summary. The vertical andhorizontal components of the
vestibulo-ocular reflex (VOR) were recorded in alert, re-
strained cats who were placed on their sides and sub-
jected to whole-body rotations in the horizontal plane.
The head was either on the axis or 45 cm eccentric from
the axis of rotation. During off-axis rotation there was
a change in the linear force acting on the otolith organs
due to the presenceof a centripetal acceleration along the
animal's vertical axis.Otolith forces (defined to be oppo-
site to the centripetal acceleration) directed ventrally
with respectto the animal (negative) decreasedboth the
amplitude and time constant of the first-order ap-
proximation to the slow phaseeyevelocity of the vertical

  

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

 

Collections: Biology and Medicine