is the name for the area of psychology pertaining to physiology. The really cool thing about this field is guinea pigs get hooked up to alot of electrical equipment. Things can go horribly wrong if you don't have the correct isolation transformers protecting the equipment from a power surge.
People in psychophysiological studies often have their heart rate, blood pressure, skin conductance, EEG (electroencephalogram), and EOG (electrooculogram) recorded. Processing this recorded data, however, can sometimes be quite the opposite of fun.