Theoretical Considerations about Tapeta Lucida
Many fishes employ a catoptric device, the tapetum lucidum, to increase light absorption by the retina. The ocular structure and habits of these fishes indicate that they are adapted to a mode of existence in dim light and that tapeta might aid vision under such circumstances by enhancing sensitivity. Unfortunately, little experimental evidence is available about the role of fish tapeta in vision, so even an indirect approach may contribute useful information.
KeywordsVisual Pigment Absolute Threshold Spatial Summation Visual Adaptation Increment Threshold
Unable to display preview. Download preview PDF.
- Barlow, H.B. (1965). Optic nerve impulses and Weber’s law. Cold Spring Harbor Symposia on Quantitative Biology. XXX Sensory Receptors.Google Scholar
- Harosi, F.I. (1971). Frog rhodopsin in situ: orientational and spectral changes in the chromophores of isolated retinal rod cells. Ph. D. Dissertation. Johns Hopkins University.Google Scholar
- LeGrand, Y. (1957). Light, colour and vision. Chapman and Hall, London.Google Scholar
- Tyler, J.E. (1960). Radiance distribution as a function of depth in an underwater environment. Bull. Scripps Inst. Oceanog. Univ. Calif. 7: 363–412.Google Scholar
- Walsh, J.W.T. (1965). Photometry. Dover Publ., New York.Google Scholar