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The Head-Neck Sensory Motor System$
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Alain Berthoz, Werner Graf, and P. P. Vidal

Print publication date: 1992

Print ISBN-13: 9780195068207

Published to Oxford Scholarship Online: March 2012

DOI: 10.1093/acprof:oso/9780195068207.001.0001

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Properties of Eye and Head Movements Evoked by Electrical Stimulation of the Monkey Superior Colliculus

Properties of Eye and Head Movements Evoked by Electrical Stimulation of the Monkey Superior Colliculus

Chapter:
(p.292) Chapter 46 Properties of Eye and Head Movements Evoked by Electrical Stimulation of the Monkey Superior Colliculus
Source:
The Head-Neck Sensory Motor System
Author(s):

Mark A. Segraves

Michael E. Goldberg

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195068207.003.0046

On monkeys and cats, microstimulation of the superior colliculus evokes gaze movements containing both eye and head movement components. The superficial layers of the superior colliculus in these species contain a simple point-to-point representation of the retina. This retinotopic map is parallel with a movement activity map in the intermediate layers produced by neurons that are stimulated before and during saccades of specific amplitude and direction. Early reports of electrical stimulation of the monkey's superior colliculus with the head restrained focused on the correspondence of sensory and motor maps, finding that the trajectories of saccadic eye movements evoked by electrical stimulation, depended mainly upon the location of the stimulation site, with the eyes' orbital position having only a very slight effect upon the amplitude and direction of the evoked eye movement.

Keywords:   microstimulation, superior colliculus, retinotopic map, amplitude, direction, orbital position

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