Absorption of light in photoreceptors: Transverse incidence
Originals
Received:
Accepted:
- 26 Downloads
- 1 Citations
Abstract
The time variation of the absorption rate (i.e., the number of photons absorbed per sec) in a photoreceptor when light is incident perpendicular to its axis has been studied for various species and different conditions. Due to the cylindrical geometry of the photoreceptor the expressions for the absorption rates become very complicated. Hence, simple approximate expressions for the absorption rates in the case of some of the species have been suggested. The present analysis will be useful in analysing the mechanism of the photoreceptor when light is incident perpendicular to the axis.
Key words
Absorption PhotoreceptorsPreview
Unable to display preview. Download preview PDF.
References
- Alpern M, Pugh EN (1974) The density and photosensitivity of human rhodopsin in the living retina. J Physiol 237: 341–370Google Scholar
- Baylor DA, Lamb TD, Yau KW (1979) The membrane current of single rod outer segments. J Physiol 288: 589–611Google Scholar
- Brown PK (1972) Rhodopsin rotates in the visual receptor membrane. Nature (New Biol) 236: 35–38Google Scholar
- Dartnall HJA (1968) The photosensitivities of visual pigments in the presence of hydroxylamine. Vision Res 8: 339–358Google Scholar
- Dartnall HJA, Goodeve CF, Lythgoe RJ (1936) The quantitative analysis of the photochemical bleaching of visual purple. Proc R Soc Lond [Ser A] 156: 158–170Google Scholar
- Dartnall HJA, Goodeve CF, Lythgoe RJ (1938) The effect of temperature on the photochemical bleaching of visual purple solutions. Proc R Soc Lond [Ser A] 164: 216–230Google Scholar
- Denton EJ (1954) On the orientation of molecules in the visual rods of Salamandra maculosa. J Physiol 124: 17–18Google Scholar
- Denton EJ (1959) The contributions of the oriented photosensitive and other molecules to the absorption of whole retina. Proc R Soc Lond [Ser B] 150: 78–94Google Scholar
- Gupta BD (1980) Principal absorption axes of rhodopsin and prelumirhodopsin. Biophys Struct Mech 7: 97–100Google Scholar
- Gupta BD, Sharma A (1980) Absorption of light in photoreceptors: Effect of waveguiding property. Biophys Struct Mech 6: 227–232Google Scholar
- Gupta BD, Sharma A, Goyal IC (1979) The directional absorption properties of rhodopsin and its photoproducts. Biophys Struct Mech 5: 321–330Google Scholar
- Jagger WS (1979) Local stimulation and local adaptation of single isolated frog rod outer segments. Vision Res 19: 381–384Google Scholar
- Liebman PA (1962) In situ microspectrophotometric studies on the pigments of single retinal rods. Biophys J 2: 161–178Google Scholar
- Onderdelinden D, Strackee L (1973) Computed bleaching curves for pigments in a layer. Vision Res 13: 1297–1301Google Scholar
- Pugh EN (1975) Rhodopsin flash photolysis in man. J Physiol 248: 393–412Google Scholar
- Rabinovitch B (1973) Use of a single beam of light to promote a photochemical reaction and to follow its kinetics. Photochem Photobiol 17: 479–485Google Scholar
- Schmidt WJ (1938) Polarisationsoptische Analyse eines Eiwei\lipoid-Systems, erlÄutert am Au\englied der Sehzellen. Kolloid Z 85: 137–148Google Scholar
- Wald G (1954) On the mechanism of the visual threshold and visual adaptation. Science 119: 887–892Google Scholar
- Wald G, Brown PK, Gibbons IR (1963) The problem of visual excitation. J Opt Soc Am 53: 20–35Google Scholar
- Wolken JJ (1961) A structural model for a retinal rod. In: Smelser GK (ed) The structure of the eye. Academic Press, New York London, pp 69–81Google Scholar
Copyright information
© Springer-Verlag 1981