[Stereotyped movements and autonomous rhythms]

The present study is concerned with the pathogenesis of jactatio capitis, of the stereotyped movements of oligophrenics, of dements, and of long-stay hospitalized defect schizophrenics, as well as with stereotyped movements in domestic animals. This leads to a discussion of the significance of rhythmically alternating innervation for pathological and normal movements. The relevance of rhythmic events for movements in inanimate systems is emphasized and the analogies which exist between movement in the organic and in the inorganic sphere are pointed out.