Dynamics of sensitivity regulation in primate outer retina: the horizontal cell network.

Dynamics of sensitivity regulation in primate outer retina: the horizontal cell network. Research Abstract Details 

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Dynamics of sensitivity regulation in primate outer retina: the horizontal cell network. Abstract Text:

The goal of these experiments was to define the time course and degree of cone adaptation in primate outer retina by use of probe stimuli upon temporally modulated backgrounds. Recordings were obtained from primate horizontal cells. Test probes were either a low-amplitude, high-frequency sinusoid superimposed on a slowly modulated background or small test pulses superimposed on backgrounds of various frequencies. The amplitude of the test response was modulated by the background, indicating sensitivity regulation. Results were consistent with gain controls which, at 1000 td, required approximately 10-20 ms to completion. These mechanisms could also account for some of the distortions of horizontal cell responses to sinusoids and pulses. Modulation of test responsivity occurred at low background contrasts, suggesting no threshold change in light level must be exceeded to evoke sensitivity regulation. As retinal illuminance increased from darkness, sensitivity regulation was evident at 10-20 td.

Dynamics of sensitivity regulation in primate outer retina: the horizontal cell network. Publishing Authors By Initials

For similar psychological phenomena and processes: mental processes: perception: sensory thresholds research abstracts see: psychological phenomena and processes: mental processes: perception: sensory thresholds research

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Dynamics of sensitivity regulation in primate outer retina: the horizontal cell network. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Journal of vision

VOLUME: 3

Page Numbers: 513-26

Journal Abbreviation: J Vis

ISSN: 1534-7362

DAY: 4

MONTH: 09

YEAR: 2003

Dynamics of sensitivity regulation in primate outer retina: the horizontal cell network. Information

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LANGUAGE: eng

NlmUniqueID: 101147197

Dynamics of sensitivity regulation in primate outer retina: the horizontal cell network. Keywords Mesh Terms:

KEYWORDS: Sensory Thresholds

MESH TERMS: physiology

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Grant and Affiliation Information for Dynamics of sensitivity regulation in primate outer retina: the horizontal cell network.

AFFILIATION: Max Planck Institute for Biophysical Chemistry, Göttingen, Germany. blee@sunyopt.edu

Country: United States

AGENCY: United States NCRR

GRANT: RR00166

ACRONYM: RR

MEDLINETA: J Vis

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