Diseases of the nervous system : a text-book of neurology and psychiatry . of the spinocerebellar paths (Flechsig,Gowers—vestibular systems), as in theFriedreich and Marie ataxia group;from involvements in the cerebellumitself (tumors, cysts, ageneses, scleroses);in affections involving the superior cere-bellar peduncles—from bulbar and pon-tine involvements of these paths, andalso from implication of the cerebello-rubral, cerebellothalamic,and frontocere-bellar paths. Typical cerebellar ataxias are thus seen in some frontaltumors, with classical intoxication gait. Chiefly associated with atax
Diseases of the nervous system : a text-book of neurology and psychiatry . of the spinocerebellar paths (Flechsig,Gowers—vestibular systems), as in theFriedreich and Marie ataxia group;from involvements in the cerebellumitself (tumors, cysts, ageneses, scleroses);in affections involving the superior cere-bellar peduncles—from bulbar and pon-tine involvements of these paths, andalso from implication of the cerebello-rubral, cerebellothalamic,and frontocere-bellar paths. Typical cerebellar ataxias are thus seen in some frontaltumors, with classical intoxication gait. Chiefly associated with ataxias of the trunk and the lower extremitiesin standing, walking, etc., are the bilateral or unilateral (usually homo-lateral) ataxias (dysmetrias) of the upper extremities. The individualmuscular activities are illy coordinated, botb as to space and time,the desired act only being arrived at after several trials and errors,as in walking. Visual aid, or its lack, has little or no influence on theataxia, as tested by the finger-nose test and finger-finger test, and the. Fig. 210.—^Cerebellar gait attitude.(Thomas.) 1 Stewart and Holmes, Brain, 1904. SYMPTOMS 407 ataxia is a constant one, non-increasing, as in an intention tremor(with varying graduations, for certainly the intention tremors of mul-tiple sclerosis are often due to interference with cerebellar mechanisms). J Fig. 211.—Test for dysmetria in cerebellar disturbances.
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