Psychophysiology in Pervasive Developmental Disorder and Attention-Deficit/ Hyperactivity Disorder

Abstract

Many reports suggest the existence of biological background to developmental disabilities. We reported the physiological research, especially electroencephalogram, auditory brainstem response, event-related potentials. But we must consider the influence of mental retardation about the results of past research findings. And we have to think hard about these subjects according to characteristics of developmental disabilities in the research of event-related potentials.