Modelling oil droplet absorption spectra and spectral sensitivities of bird cone photoreceptors

Hart, N. S. and Vorobyev, M. (2005) Modelling oil droplet absorption spectra and spectral sensitivities of bird cone photoreceptors. Journal of Comparative Physiology A, 191 4: 381-392. doi:10.1007/s00359-004-0595-3


Author Hart, N. S.
Vorobyev, M.
Title Modelling oil droplet absorption spectra and spectral sensitivities of bird cone photoreceptors
Journal name Journal of Comparative Physiology A   Check publisher's open access policy
ISSN 0340-7594
1432-1351
Publication date 2005
Sub-type Article (original research)
DOI 10.1007/s00359-004-0595-3
Volume 191
Issue 4
Start page 381
End page 392
Total pages 12
Editor Fredrich G. Barth
Place of publication Heidelberg, Germany
Publisher Springer
Collection year 2005
Language eng
Subject C1
270502 Neurobiology
780105 Biological sciences
Abstract Birds have four spectrally distinct types of single cones that they use for colour vision. It is often desirable to be able to model the spectral sensitivities of the different cone types, which vary considerably between species. However, although there are several mathematical models available for describing the spectral absorption of visual pigments, there is no model describing the spectral absorption of the coloured oil droplets found in three of the four single cone types. In this paper, we describe such a model and illustrate its use in estimating the spectral sensitivities of single cones. Furthermore, we show that the spectral locations of the wavelengths of maximum absorbance (lambda(max)) of the short- (SWS), medium- (MWS) and long- (LWS) wavelength-sensitive visual pigments and the cut-off wavelengths (lambda(cut)) of their respective C-, Y- and R-type oil droplets can be predicted from the lambda(max) of the ultraviolet- (UVS)/violet- ( VS) sensitive visual pigment.
Keyword Cone Photoreceptors
Oil Droplets
Spectral Sensitivity
Microspectrophotometry
Bird Vision
Behavioral Sciences
Neurosciences
Physiology
Zoology
Visual Pigments
Color-vision
Receptor Noise
Ocular Media
Melopsittacus-undulatus
Ultraviolet Pigments
Molecular Evolution
Sexual Selection
Passerine Bird
Chicken Retina
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

 
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Created: Wed, 15 Aug 2007, 06:15:31 EST