OTHER METHODS OF STUDYING VISUAL PIGMENTS 



:t 



o 0-15 



s: 

 u 



JO 



>» 



f 0-10 

 o 



5^ 



c 



Soos 



- \ Bleaching 



4 5 6 7 



Time (mins.) 



10 



I 0-10 



« 



J3 



0-05 





I I I I I I I I 



400 



450 500 550 



Wavelength in mp 



600 



650 



Fig. 7.7. (A) Time courses of bleaching and regeneration in the retina 

 of the decerebrate rabbit. Measurements made with light of 517 m^. 

 (B) Difference spectrum (+) of the retinal bleaching compared with the 

 density spectrum (full curve) and difference spectrum at pH 5-5 (dashed 

 curve) of frog's visual purple. 

 {Redrawn after Rushton, Campbell, Hagins and Brlndley, 1955) 



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