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Neurophysiological signs such as prepulse inhibition and eye tracking are linked to conditions like schizophrenia. They are particularly useful to study because they are present across species, allowing investigation with animal models as well as human subjects. Unlike neuropsychological tests, where patients may improve through practice or with extra motivation, signs like prepulse inhibition does not improve or deteriorate and so remains a test that can be repeated time after time.

Eye Tracking

Event Related Potentials

Prepulse Inhibition