Highly specialized cylindrical segments of the visual cells containing rhodopsin; together with the retinal cones, they form the light-sensitive elements of the retina
The 125 million cells located outside the center of the retina that transduce light waves into neural impulses, thereby coding information about light and dark (p 112)
light-sensitive cells located in the peripheral (side) areas of the retina They are responsible for detecting movement, shape, light and dark The visual picture provided by rods is in black and white
A subtype of photoreceptor found in the vertebrate retina Rods are more sensitive to light than cones are responsible for vision under dim illumination