[Opsoclonia: oculographic study].

Oculographic study of a case of opsoclonus associated with infectious meningoencephalitis was used to determine the criteria of definition of this abnormal ocular movement, distinguishing it from the other abnormal movements of flutter and dysmetria. The authors first discuss, on the basis of these recordings, the possible relationship between opsoclonus and myoclonia, and then the role of the cerebellum. The disturbances noted in the course of study of saccadian movement lead them to suggest the hypothesis of overall involvement of the saccadian oculomotor system. They stress the value of oculographic recording in better understanding the general mechanisms of saccadian movement and the pathogenesis of the various changes which may be encountered.