By L. E. Mays, P. D. R. Gamlin (auth.), Prof. Dr. Ove Franzén, Dr. Hans Richter, Dr. Lawrence Stark (eds.)
This convention used to be instigated through a mixture of things: the character of the matter, the extensive unfold occupational epidemiology stated on eye indicators and eye fatigue within the office, and the organizers' knowledge of the complexity of the medical and scientific bases of data that will be usefully utilized. The creation of latest tools into method neurobiology offers new insights into how we obtain and technique info from the exterior global, and act upon it. New, non-invasive equipment have opened how to direct statement of the human mind in motion. Due fairly to the interplay among the visible and oculomotor necessities concerned, numerous scientific and clinical fields intersect while those matters are thought of. to supply transparent imaginative and prescient the accommodative and pupillary mechanisms are used. to keep up binocularity, the ver gence oculomotor process, delicate to fatigue, needs to reach congruence with accommodative degrees. This accommodation-vergence linkage was once a spotlight of our symposium.
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Extra info for Accommodation and Vergence Mechanisms in the Visual System
Therefore, it is possible that the rostral SC is also involved in the control of accommodation or vergence. The results of several recent studies have suggested that the rostral SC is also involved in the control of accommodation. The accommodation-related area in the rostral SC also corresponds to the area of representation of the central visual field. The accommodation-related area in the SC receives heavy projections from the accommodation area in the lateral suprasylvian (LS) area of the cat cortex.
Sato Sapporo Medical University. Dept. of Ophthalmology. S-1. W-16. Chuo-ku. Sapporo. 060. Hokkaido. Japan Summary: The superior colliculus (SC) has long been recognized as an important structure in the generation of saccadic eye movements. The SC of the cat and the monkey has recently been shown to be involved in the control of visual fixation. A subpopulation of collicular cells exhibits tonic discharge when the animal fixates on a target of interest. These cells are located in the rostral SC where the central visual field is represented.
It is well known that the LS area is also involved in the control of vergence and pupillo-constriction. The rostral SC projects to the pretectal nuclei (PT) where accommodative responses are evoked by microstimulation, the raphe interpositus (RIP), in which omnipause neurons are located, and the dorsomedial portion of the nucleus reticularis tegmenti pontis. Many neurons in the intermediate layers of the rostral SC have divergent axon collaterals to the PT and the RIP. The rostral SC is likely a key structure involved in the near response and visual fixation.