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Non-cerebellar ataxias: posterior column-like ataxia and cerebellar-like ataxia
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- M.D., Ph.D. Fukutake Toshio
- Department of Neurology, Kameda Medical Center
Bibliographic Information
- Other Title
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- 非小脳性運動失調：後索型運動失調と小脳型運動失調
Description
<p>Ataxia is not only due to cerebellar lesions, but also due to non-cerebellar lesions such as those in the brain, spinal cord, dorsal root (DR), peripheral nerve. In this article, optic ataxia is excluded and ‘vestibular ataxia’ is briefly referred. Non-cerebellar ataxias are generically called sensory ataxia or posterior column ataxia. However, since non-cerebellar lesions, e.g. frontal lobe lesions, may develop “cerebellar-like ataxia” (Hirayama, 2010). At the same time, non-posterior column lesions, e.g. parietal lobe lesion, can show “posterior column-like ataxia”. From these viewpoints, I here describe various non-cerebellar ataxia in some disorders such as tabes dorsalis and sensory neuropathies and emphasize a role of a peripheral sensory input to the cerebellum via the DR ganglia and spinocerebellar tract for sensory ataxia because there is the International Consensus (2016) that the ataxia in Miller Fisher syndrome is suggested cerebellar-like clinicophysiologically.</p>
Journal
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- Rinsho Shinkeigaku
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Rinsho Shinkeigaku 63 (4), 201-208, 2023
Societas Neurologica Japonica
