Photopigment is a chemical that releases energy when struck by light Moreover, Photopigments are chemical substances that absorb light, thereby starting the complex transduction process that transforms physical electromagnetic energy into an electrochemical neural impulse; rods and cones contain different types of Photopigments; different types of Photopigments absorb differing amounts of light and may detect different hues
Lexicon of Psychology - Terms, Treatments, Biographies,