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Short-Latency Primate Vestibuloocular Responses During Translation DORA E. ANGELAKI AND M. QUINN MCHENRY
 

Summary: Short-Latency Primate Vestibuloocular Responses During Translation
DORA E. ANGELAKI AND M. QUINN MCHENRY
Department of Surgery (Otolaryngology), University of Mississippi Medical Center, Jackson, Mississippi 39211
Angelaki, Dora E. and M. Quinn McHenry. Short-latency primate
vestibuloocular responses during translation. J. Neurophysiol. 82:
16511654, 1999. Short-lasting, transient head displacements and
near target fixation were used to measure the latency and early
response gain of vestibularly evoked eye movements during lateral
and fore-aft translations in rhesus monkeys. The latency of the hori-
zontal eye movements elicited during lateral motion was 11.9 5.4
ms. Viewing distance-dependent behavior was seen as early as the
beginning of the response profile. For fore-aft motion, latencies were
different for forward and backward displacements. Latency averaged
7.1 9.3 ms during forward motion (same for both eyes) and 12.5
6.3 ms for the adducting eye (e.g., left eye during right fixation)
during backward motion. Latencies during backward motion were
significantly longer for the abducting eye (18.9 9.8 ms). Initial
acceleration gains of the two eyes were generally larger than unity but
asymmetric. Specifically, gains were consistently larger for abducting
than adducting eye movements. The large initial acceleration gains

  

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

 

Collections: Biology and Medicine