Licht-im-Terrarium: Literaturdatenbank
Licht-im-Terrarium: Literaturdatenbank |
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Rieke, F., & Baylor, D. A. (1998). Single-photon detection by rod cells of the retina. Rev. Mod. Phys. 70(3), 1027–1036. Added by: Sarina (2016-01-31 18:48:27) |
| Resource type: Journal Article DOI: 10.1103/RevModPhys.70.1027 BibTeX citation key: Rieke1998 View all bibliographic details  |
Categories: Englisch = English Keywords: Netzhaut = Retina Creators: Baylor, Rieke Collection: Rev. Mod. Phys. |
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| Abstract |
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At low light levels, the visual system detects and counts photon absorptions with a reliability close to limits set by statistical fluctuations in the number of absorbed photons. Thus the rod photoreceptors that provide the input signals to the dark-adapted visual system act as nearly perfect photon counters. This elegant performance is possible because light detection in the rods satisfies four functional requirements: high quantum efficiency, sufficient amplification to produce a measurable response, low dark noise, and low trial-to-trial variability in the elementary response. The rod meets these requirements using biochemical reactions rather than the solid-state reactions of silicon detectors, yet its performance equals or exceeds that of man-made detectors in several ways.
Added by: Sarina Last edited by: Sarina |