Chapter 41, Problem 8TYK

Summary Introduction

Introduction:

The retina of the vertebrate eye contains two types of photoreceptors, rods and cones. Each of them responds to a different type of visual stimuli. For instance, rods get activated in the presence of dim light while cones get activated in the presence of bright light. Rods help in the spatial vision of objects in dim light while cones allow us to observe different colors in bright light. The photoreceptors send signals through optic fiber to the visual cortex of the brain.