Orienting otolith-ocular reflexes in the rabbit during static and dynamic tilts and off-vertical axis rotation.
Orienting otolith-ocular reflexes were assessed in rabbits using static tilt, off-vertical axis rotation (OVAR) and sinusoidal oscillation about earth-horizontal axes. In all paradigms, head pitch produced ocular counter-pitch and vergence, and head roll produced ocular counter-roll and conjugate yaw version. Thus, vergence and version are essential components of orienting reflexes along the naso-occipital and bitemporal axes. Vergence and version caused misalignment between the axes of eye and head movement during pitch and roll head movements. Semicircular canal input broadened the band-pass of these orienting reflexes, which would make them more appropriate when compensating for head movement during active motion.
Maruta
J
J
Departments of Neurology and Physiology and Biophysics, Mount Sinai School of Medicine, 1 East 100th Street, Box 1135, New York, NY 10029, USA.
Simpson
J I
JI
Raphan
T
T
Cohen
B
B
D000704:Analysis of Variance; D000818:Animals; D007699:Kinesthesis / Q000502:physiology*; D016018:Least-Squares Analysis; D010037:Otolithic Membrane / Q000502:physiology*; D011817:Rabbits; D012027:Reflex, Vestibulo-Ocular / Q000502:physiology*