Photopic adaptation in the red-green spectral range
| Autor: | Karel Kranda, P. Ewen King-Smith |
|---|---|
| Rok vydání: | 1981 |
| Předmět: |
Physics
Male genetic structures business.industry Adaptation Ocular Absolute threshold Adaptation (eye) Sensory Systems Standard deviation Ophthalmology Optics Spectral sensitivity Foveal Spectrophotometry Sensory Thresholds Humans Female Sensitivity (control systems) Scotopic vision business Color Perception Photopic vision |
| Zdroj: | Vision research. 21(4) |
| ISSN: | 0042-6989 |
| Popis: | Spectral sensitivity curves were measured for foveal test flashes at absolute threshold, and on varying intensities of a blue-white background which stimulates long and medium wave cones about equally. The average data for three subjects could be fitted with a standard deviation of 0.028 log units by assuming independent responses in “ L ” and “ C ” mechanisms with peak sensitivity near 555 and 605 nm. The C mechanism was adapted only about 86% as much (in log units) as the L mechanism. It is proposed that post-receptoral processes are responsible for this difference in adaptation; the significance of post-receptoral adaptation in photopic and scotopic vision is discussed. |
| Databáze: | OpenAIRE |
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