A System of Medicine, Vol. 8 (Classic Reprint) - Softcover

Inhaltsangabe

Excerpt from A System of Medicine, Vol. 8

Rotatory movements - It frequently happens that, after experimental lesion involving the lateral lobe and, more particularly, one of the cerebellar peduncles, forced or rotatory movements occur which tend to carry the animal round its vertebral axis. The direction of these movements has been variously described, and probably they are not altogether uniform, but vary as the lesion has more of an irritative or a destructive character. In my own and Turner's experiments, which correspond with those of Magendie and Hitzig, the almost invariable direction, while the animal was sprawling on the abdominal surface, was a tendency to roll, or an actual and apparently irresistible rolling towards the side of lesion. Thus, if the left lateral lobe were destroyed, or the middle peduncle divided, the animal, laid on its ventral surface, would roll to the left. This rolling tendency may be described as the effect of a rotation round the vertebral axis from left to right that is, from the injured to the sound side. Russell however, represents the rotation as occurring in the inverse sense.

Rotatory movements have not often been observed in man. They seem to occur more particularly when the lesion involves the cerebellar peduncles. Not infrequently, however, there are forced movements (zwangsbewegungen), which are of a similar character to the rotatory or rolling movements seen in the lower animals, and cause the patient to assume positions from which he cannot be easily displaced, or to which, if left alone, he tends to return. The direction of these movements is, however, not uniform. Jalland reports a case of tumour of the right side of the cerebellum compressing the medulla, in which the patient always lay more on the right side than on the left. Two days before death the patient turned on the left side, and if laid on the right side would turn over on the left. Wulff (105) has recorded a case of tumour affecting principally the left side, in which the patient ultimately lay continuously on the right side; and Friedeberg (case 9) reports a case of abscess of the left hemisphere in which the forced movements were bending of the body forwards and of the head backwards.

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