SPA 3101 Chapter Notes - Chapter 6: Cerebellum, Dysarthria, Cerebral Cortex
7 Oct 2020
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Etiologies: any process that damages the cerebellum or cerebellar control circuit. Degenerative diseases: most common = hereditary ataxias, can be fatal or non fatal, onset in childhood or adult hood, called spinocerebellar and olivopontocerebellar, ataxia telangiectasia, another progressive autosomal recessive disorder, distal muscle atrophy, sensory decline, primary episodic ataxias. Induced by exercise or startle: opca olivopontocerebellar atrophy, associated with diseases under multiple system atrophy, features of parkinsonism, movement disorders, dementia, pyramidal and opthalamologic signs and pseudobulbar palsy. Demyleinating diseases: multiple sclerosis ms, cerebellar lesions and taxic dysarthria, not often confined to cerebellum. Vascular disorders: lesions most commonly caused by aneurysms or stroke. Neoplastic disorders: tumors within the cerebellum that exert mass effects on it, speech impairment is 29% in children undergoing tumor resection, midline tumors have worse effects. Trauma : tbi, frequently associated with this dysarthria. Toxic or metabolic conditions: cerebellar degeneration is associated with alcoholism, permanent dysarthria in chronic alcoholism is reportedly uncommon, ataxic speech in acute alcohol conditions.
