Quality extinction test and lateralized EEG focality: preliminary observations in a group of epileptic patients.

73 primary epileptic patients, grouped according to their clinical picture and EEG focality, were evaluated by means of a test of tactile extinction (Quality Extinction Test) in order to assess the usefulness of this test in detecting lateralized cerebral malfunctioning in neurological functional diseases. The data indicate an increase of tactile extinction in epileptic patients and a good relationship between side of focality and side of extinction.