[Early childhood autism from the behavioral biologic and neurophysiologic viewpoint].

Assuming that the autistic syndromes my be attributed to disturbances in information input and processing, the results of the most important behavioural and neurophysiological investigations made during the past 10 to 15 years are introduced and discussed in brief. Etiological questions are raised, too. Disturbed perception in different sensory systems may also be considered as partial disablement. The environment's reaction to the disturbances potentiates the child's disturbed communication with the environment. It is pointed to that similar behavioural patterns are also known from animal etiology. The autism in early infancy may be a sign of disturbed assessment of reality as well.