813 VISUAL FIELD MAPPING

The Visual Field Mapping program illustrates the selective responses of cortical neurons in the visual cortex. The program is divided into three parts:

1) The Visual Cortex of the Brain displays a side view of a person's brain and allows the student to see how information about a visual stimulus travels from the eye to the visual cortex.

2) How Cells Respond in a Normal Environment simulates how some of the feature detectors in the brain function. As the student moves the fixation point, or "eye", around a normal scene presented on the screen, the computer makes an irregular sound representing the neuron's electrical activity.

3) How Cells Respond to Laboratory Stimuli shows how the receptive fields of feature detectors can be studied in the laboratory, using a cat as an observer.