Gating of Retinal Transmission by Afferent Eye Position and Movement Signals

Vision in most vertebrates is an active process that requires the brain to combine retinal signals with information about eye movement. Eye movement information may feed forward from the motor control areas of the brain or feed back from the extrinsic eye muscles. Feedback signals elicited by passiv...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1989-01, Vol.243 (4887), p.93-96
Main Authors: Lal, Ratneshwar, Friedlander, Michael J.
Format: Article
Language:English
Subjects:
Action Potentials
Afferent Pathways - physiology
Animals
Biological and medical sciences
Brain
Brain research
Cats
Eye
Eye and associated structures. Visual pathways and centers. Vision
Eye Movements
Eyes
Fundamental and applied biological sciences. Psychology
Geodetic position
Movements
Neurons
Retina
Retina - physiology
Signal transmission
Signals
Vertebrates: nervous system and sense organs
Vision research
Vision, Ocular
Visual Pathways - physiology
Visual Perception
Visual stimulation
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Summary:Vision in most vertebrates is an active process that requires the brain to combine retinal signals with information about eye movement. Eye movement information may feed forward from the motor control areas of the brain or feed back from the extrinsic eye muscles. Feedback signals elicited by passive eye movement selectively gate retinal outflow at the first relay, the dorsal lateral geniculate nucleus. The gating predominantly facilitates retinogeniculate transmission immediately after eye movement and inhibits transmission when a new steady-state eye position is achieved. These two gating effects are distributed in a complementary fashion across the dorsal lateral geniculate nucleus such that the spatiotemporal activity profile could contribute to object detection and localization.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.2911723