AP PSYCHOLOGY

Detailed explanation-1: -Rod cells lie circumferentially and aid with peripheral vision. The first stage in transducing light into a form the brain can comprehend is the ‘capturing’ of light energy into a chemical format. This is achieved by the presence of various light ‘pigment’ molecules within the outer segments of these receptors.

Detailed explanation-2: -Light transduction happens in the outer segments of the rods and cones. This means that light travels through several layers (ganglion cells, bipolar and amacrine cells) before it does anything!

Detailed explanation-3: -The rods and cones are the site of transduction of light into a neural signal. Both rods and cones contain photopigments, which are pigments that undergo a chemical change when they absorb light.

Detailed explanation-4: -The transduction (conversion) of light signals into nerve impulses is accomplished by some 125 million photoreceptors located in the deepest part of the retina.