Auditory evoked potential and psychiatry.

An adolescent was implied in a car accident in which he suffered a head trauma without any substantial loss of consciousness. The posttraumatic syndrome was characterized by headaches and mental symptoms: nervousness, feelings of depersonalization, impaired memory, difficulty in concentration. Neurological examination and laboratory tests have always been normal but for a large perduring asymmetry at the Cortical Auditory Evoked Response. This finding is commented in the light of a review of the literature and of some neuropsychological findings.