THREE-DIMENSIONAL ANALYSIS OF VESTIBULO-OCULAR REFLEXES
نویسندگان
چکیده
منابع مشابه
Unifying Vestibulo-ocular Reflexes
We present an eye/head gaze controller based on recent findings in biological gaze control. Despite the absence of an explicit VOR mechanism the model is able to (i) produce classical VOR responses and (ii) reject head perturbations during the saccadic portion of a gaze shift executed to a remembered target -what is usually attributed to a separate vestibular mechanism. We argue that distinguis...
متن کاملControl of ocular torsion in the rotational vestibulo-ocular reflexes.
Visual stabilization of the retina during rotational head movements requires that in far vision the eyes rotate about the same axis as the head but in opposite direction with a gain close to unity (optimal strategy). To achieve this goal the vestibulo-oculomotor system must be able to independently control all three rotational degrees of freedom of the eye. Studies of the human rotational vesti...
متن کاملVestibulo-ocular reflexes of adventitiously and congenitally blind adults.
The vestibulo-ocular reflex (VOR) was measured in congenitally blind, adventitiously blind, and normally sighted adults to determine how it was affected by loss of vision. VOR gain and phase were measured in subjects rotated sinusoidally in total darkness, while concentrating on an imaginary earth-fixed target. Gain was lower in adventitiously blind subjects than in sighted subjects. The gain r...
متن کاملOntogenetic Development of Vestibulo-Ocular Reflexes in Amphibians
Vestibulo-ocular reflexes (VOR) ensure gaze stability during locomotion and passively induced head/body movements. In precocial vertebrates such as amphibians, vestibular reflexes are required very early at the onset of locomotor activity. While the formation of inner ears and the assembly of sensory-motor pathways is largely completed soon after hatching, angular and translational/tilt VOR dis...
متن کاملAbsent vestibulo-ocular reflexes and acute supratentorial lesions.
Loss of vestibulo-ocular reflexes occurred in two patients with acute supratentorial lesions who received therapeutic doses of anticonvulsant drugs. There was no clinical or angiographic evidence of focal brain-stem damage. Absence of vestibulo-ocular reflexes is attributed to a combination of acute cerebral damage and anticonvulsant drugs. The loss of these reflexes in patients with acute cere...
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ژورنال
عنوان ژورنال: Nippon Jibiinkoka Gakkai Kaiho
سال: 1996
ISSN: 0030-6622,1883-0854
DOI: 10.3950/jibiinkoka.99.1751