Cerebellar Ataxia
Cerebellar Ataxia
Disease processes affecting the cerebellum and its connections, such as can occur in multiple sclerosis, often lead to lack of motor coordination, postural tremor, and tremor on directed movement; these symptoms can be difficult to treat. The cerebellum generates oscillations over a range of frequencies (beta, gamma, very fast) and some of these are coherent with oscillations in thalamus and in muscle. Genetically modified ataxic mice can exhibit short runs of very fast oscillations that are gap junction dependent. Oscillations can also be induced in cerebellar cortex slices: gamma and very fast oscillations both require gap junctions, and gamma also depends on synaptic inhibition.
Keywords: incoordination, ataxia, gap junction, IPSP, Purkinje cell
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