First identification and localization of a visual pigment in Hydra (Cnidaria, Hydrozoa)

2001 ◽  
Vol 187 (1) ◽  
pp. 79-81 ◽  
Author(s):  
C. Musio ◽  
S. Santillo ◽  
C. Taddei-Ferretti ◽  
L.J. Robles ◽  
R. Vismara ◽  
...  
Keyword(s):  
Visual Pigment

Opsin gene sequence variation across phylogenetic and population histories inMysis(Crustacea: Mysida) does not match current light environments or visual-pigment absorbance spectra

2012 ◽  
Vol 21 (9) ◽  
pp. 2176-2196 ◽  
Author(s):  
ASTA AUDZIJONYTE ◽  
JOHAN PAHLBERG ◽  
MARTTA VILJANEN ◽  
KRISTIAN DONNER ◽  
RISTO VÄINÖLÄ
Keyword(s):  
Visual Pigment ◽  
Sequence Variation ◽  
Gene Sequence ◽  
Opsin Gene ◽  
Absorbance Spectra

Insights from a lost visual pigment

1997 ◽  
Vol 15 (2) ◽  
pp. 115-117 ◽  
Author(s):  
Gabriel H. Travis
Keyword(s):  
Visual Pigment

scholarly journals Direct Action of Light in Naturally Pigmented Muscle Fibers

1962 ◽  
Vol 46 (2) ◽  
pp. 333-342 ◽  
Author(s):  
Howard H. Seliger
Keyword(s):  
Visual Pigment ◽  
Absorption Maximum ◽  
Pupil Diameter ◽  
Direct Action ◽  
Pigment Epithelium ◽  
Action Spectrum ◽  
Square Root ◽  
Light Reaction ◽  
First Order ◽  
Iris Sphincter

Contraction due to light in excised eel irises appears to follow a simple first order law. The action spectrum for contraction has a maximum which agrees with the eel rhodopsin absorption maximum. Inasmuch as rhodopsin is the rod pigment-opsin complex and the iris sphincter pupillae evolves from the pigment epithelium of the retina in the region of the iris, the muscle pigment might be the same as the visual pigment. In the human eye the contraction of the iris sphincter is activated only by light incident on the retina and the pupil diameter varies inversely with the square root of the light intensity. The inverse first power relation observed in the present experiments suggests a more primitive origin for the light reaction in eel irises. Relaxation is a much slower process and can be approximated as the sum of two first order processes.

scholarly journals Mutually exclusive expression of human red and green visual pigment-reporter transgenes occurs at high frequency in murine cone photoreceptors

1999 ◽  
Vol 96 (9) ◽  
pp. 5251-5256 ◽  
Author(s):  
Y. Wang ◽  
P. M. Smallwood ◽  
M. Cowan ◽  
D. Blesh ◽  
A. Lawler ◽  
...  
Keyword(s):  
High Frequency ◽  
Visual Pigment ◽  
Cone Photoreceptors

Renewal of visual pigment in photoreceptors of the blowfly

1984 ◽  
Vol 154 (4) ◽  
pp. 535-547 ◽  
Author(s):  
Joachim Schwemer
Keyword(s):  
Visual Pigment

Position of a 'green-red' hybrid gene in the visual pigment array determines colour-vision phenotype

10.1038/8798 ◽  
1999 ◽  
Vol 22 (1) ◽  
pp. 90-93 ◽  
Author(s):  
Takaaki Hayashi ◽  
Arno G. Motulsky ◽  
Samir S. Deeb
Keyword(s):  
Visual Pigment ◽  
Colour Vision ◽  
Hybrid Gene
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