Resetting fast phases of head and eye and their linkage in the frog

Experimental Brain Research
N DieringerA R Blight

Abstract

(1) Compensatory slow phase movements were evoked by optokinetic, vestibular and combined optokinetic and vestibular stimulation. Superimposed fast phases resetting the position of the head (in space) and of the eye (in head) were recorded with a magnetic field search coil in unrestrained and head fixed frogs, respectively. (2) Head fast phases recorded during optokinetic stimulation covaried in the frequency of their occurrence with slow phase head velocity. Their amplitude was large (average 18.9 +/- 8.9 degrees), maximal velocity increased with amplitude by 6.6 degrees/s/deg, and duration (average 230 +/- 33 ms) was almost independent on amplitude. (3) Ocular fast phases rarely occurred during sinusoidal stimulation and neither optokinetic after nystagmus nor postrotatory nystagmus were observed. Fast phases, evoked by constant velocity optokinetic or acceleratory stimuli, consisted of two components: a primary resetting fast phase and a smaller fast movement in the opposite direction. The primary fast phase had a small amplitude (average 2.2 +/- 1.3 degrees). In different stimulus conditions fast phase parameters were very similar. Maximal velocity increased by 6.5 degrees/s/deg. Duration (average 165 +/- 23.4 ms) was varia...Continue Reading

Citations

Apr 21, 2017·Journal of Neurophysiology·Friedrich KretschmerTudor Constantin Badea
Jun 27, 2008·Journal of Neurophysiology·Farshad FarshadmaneshJ Douglas Crawford
Jun 20, 2008·Journal of Neurophysiology·Yongqing XiangBernard Cohen
Mar 12, 2010·Connecticut Medicine·Edward J Volpintesta
Apr 14, 2019·Biomedicines·Lindy K BrastromDiane C Slusarski
Jul 14, 2000·Physiological Reviews·O HikosakaR Kawagoe

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