PS262 Chapter Notes -Receptive Field, Mach Bands, Axon
Document Summary
Neural processing the interaction of the signals in many neurons. They chose the limulus because the structure of its eye makes it possible to stimulate individual receptors. The limulus eye is made up of hundreds of tiny structures called ommatidia , and each ommatidium has a small lens on the eye"s surface that is located directly over a single receptor. Nerve fiber of receptor a, they found that illumination of that receptor caused a large response. But when they added illumination to the three nearby receptors at b, the response of receptor a decreased. They also found that further increasing the illumination of b decreased a"s response even more. Thus, illumination of the neighboring receptors at b inhibited the firing caused by stimulation of receptor a. A is caused by lateral inhibition that is transmitted from b to a across the. Limulus"s eye by the fibers of the lateral plexus.
