[Gastro-intestinal electromyography: interest in the study of mechansims of regulation of intestinal motility (author's transl)].

Investigations we carried out in man and animals in order to study the relationships between the electrical and the mechanical activities of the intestine, and to precise the role of BER in the regulation of intestinal motility. In the dog, an intestinal movements transducer allowed to establish that spiking activities were concomitant with circular contractions, and that these two phenomena were rhythmed by the slow waves. Under basal conditions, the longitudinal movements occurred independently; under stimulation longitudinal movements occurred independently; under stimulation longitudinal relaxations were observed to correspond to circular contractions.

Enamel defects associated with tuberous sclerosis. A clinical and scanning-electron-microscope study.

The clinical and scanning-electron-microscope appearances of enamel defects in six patients with tuberous sclerosis are described. The pit-shaped enamel defects seem to be pathognomonic of the disease. The detection may be an important help in the early diagnosis of this complex syndrome.