Behavior of floccular Purkinje cells correlated with adaptation of horizontal optokinetic eye movement response in pigmented rabbits.

Behavior of floccular Purkinje cells correlated with adaptation of horizontal optokinetic eye movement response in pigmented rabbits. Research Abstract Details 

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Behavior of floccular Purkinje cells correlated with adaptation of horizontal optokinetic eye movement response in pigmented rabbits. Abstract Text:

S Nagao,

Single unit spike activities of Purkinje cells in the cerebellar flocculus were examined during sustained horizontal sinusoidal oscillation (0.33 Hz, 2.5 degrees peak-to-peak) of a striped screen around an alert pigmented rabbit. The floccular area specifically related to horizontal reflex eye movement (H-zone) was identified by means of local stimulation that induced abduction of the ipsilateral eye. In control states, simple spike discharge of most of the H-zone Purkinje cells was enhanced by backward screen movement and depressed by forward screen movement, while complex spike discharge was modulated reciprocally. After one-hour sustained oscillation of the screen, the gain of horizontal optokinetic eye movement response (HOKR) increased by 0.16 on average. Correspondingly, simple spike modulation in most of H-zone Purkinje cells tested significantly increased in amplitude, while complex spike modulation tended to decrease. No such systematic changes were observed in other Purkinje cells. These results are consistent with the hypothesis that the floccular H-zone Purkinje cells adaptively control the optokinetic eye movement through modification of the visual mossy fiber responsiveness under the influence of the retinal error signals conveyed by the visual climbing pathway.

Behavior of floccular Purkinje cells correlated with adaptation of horizontal optokinetic eye movement response in pigmented rabbits. Publishing Authors By Initials

S Nagao,

For similar nervous system: neural pathways: afferent pathways: visual pathways research abstracts see: nervous system: neural pathways: afferent pathways: visual pathways research

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Behavior of floccular Purkinje cells correlated with adaptation of horizontal optokinetic eye movement response in pigmented rabbits. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Experimental brain research. Experimentelle Hirnfo

VOLUME: 73

Page Numbers: 489-97

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ISSN: 0014-4819

DAY: 15

MONTH: 02

YEAR: 1988

Behavior of floccular Purkinje cells correlated with adaptation of horizontal optokinetic eye movement response in pigmented rabbits. Information

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LANGUAGE: eng

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Behavior of floccular Purkinje cells correlated with adaptation of horizontal optokinetic eye movement response in pigmented rabbits. Keywords Mesh Terms:

KEYWORDS: Visual Pathways

MESH TERMS: physiology

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Grant and Affiliation Information for Behavior of floccular Purkinje cells correlated with adaptation of horizontal optokinetic eye movement response in pigmented rabbits.

AFFILIATION: Department of Physiology, Faculty of Medicine, University of Tokyo, Japan.

Country: GERMANY, WEST

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MEDLINETA: Exp Brain Res

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