The Vestibulo-ocular Reflex and VertigoJames A. Sharpe, Hugh O. Barber This volume reviews clinically relevant studies of the vestibulo-ocular reflex, the otolithic-ocular reflex, and related eye movements and highlights the practical applications of these findings in the management of patients with vertigo (dizziness and/or balance disturbance) and the design of exercise programmes for vestibular rehabillitation. The section on diagnosis and treatment of vertigo addresses conerns such as psychogenic dizziness, imbalance and falls in the aged, and perilymph fistula, and includes descriptions of outpatient and postoperative vestibular rehabilitation programmes and surgical treatment of benign postural vertigo. Nystagmus, a cardinal physical sign of vestibular disorder, is also discussed in detail. Other contributors describe new approaches to testing the vestibulo-ocular reflex and otolithic function. |
From inside the book
Results 1-3 of 84
Page 176
... gaze velocity , that is , the sum of head and eye - in - head velocity ( 61,155 ) . Use of this signal allows the per- son to pursue a visual object with any com- bination of head movement and eye move- ment . All that is required is ...
... gaze velocity , that is , the sum of head and eye - in - head velocity ( 61,155 ) . Use of this signal allows the per- son to pursue a visual object with any com- bination of head movement and eye move- ment . All that is required is ...
Page 258
... gaze angle , visual feedback , and fatigue . Slow Phase Drift and Gaze Angle The relationships between drift velocity in darkness ( no visual feedback ) and gaze angle can be expressed by the following equation ( 4 ) . d V1 = ( Yo / T ) ...
... gaze angle , visual feedback , and fatigue . Slow Phase Drift and Gaze Angle The relationships between drift velocity in darkness ( no visual feedback ) and gaze angle can be expressed by the following equation ( 4 ) . d V1 = ( Yo / T ) ...
Page 264
... gaze shift to primary position after a prolonged period of eccentric fixation . Each beat of the RN oscillation is characterized by slow phase drift in the direction of the previous eccentric gaze , followed by a fast phase in the ...
... gaze shift to primary position after a prolonged period of eccentric fixation . Each beat of the RN oscillation is characterized by slow phase drift in the direction of the previous eccentric gaze , followed by a fast phase in the ...
Contents
I | 3 |
Clinical Anatomic and Physiologic | 15 |
Clinical Tests of the VestibuloOcular Reflex | 41 |
Copyright | |
30 other sections not shown
Common terms and phrases
Acta Otolaryngol afferents Ann Neurol artery asymmetry axis Baloh RW bilateral brainstem cause cells central cerebellar cerebellum clinical component contralateral deficits degrees/sec direction disease disorders dizziness Exp Brain Res eye move eye movements eye position eye velocity fixation flocculus fovea frequency function gain gaze head movement head rotation head velocity head-shaking HOKAN Honrubia horizontal human hypertropia input ipsilateral labyrinth latency lesions LMLN mechanism medial Meniere's disease ments monkey motor msec nerve Neurology Neurophysiol normal subjects nystag oculomotor OKAN Ophthalmol optokinetic nystagmus otolith organs pathway patients peripheral vestibular posterior postural rectus response roll-tilt saccades semicircular canal sensory signals sinusoidal skew deviation slow phase smooth eye smooth pursuit sponse stimulation Stockh strabismus symptoms syndrome tagmus target tibular tients tion torsion velocity storage vertical vertigo vestib vestibular neurons vestibular nucleus vestibular system vestibulo-ocular reflex Vision Res visual waveform Zee DS