Related Experiment Video
Updated: Aug 14, 2026
08:51
Cerebellar Regional Dissection for Molecular Analysis
Published on: December 5, 2020
Cerebellar Cognitive Affective Syndrome in Spinocerebellar Ataxia Type 6
Fernanda Mary Machado1, Breno Kazuo Massuyama1, July Silveira Gomes2,3
1Division of General Neurology and Ataxia Unit, Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP), São Paulo, Brazil.
Cerebellum (London, England)
|August 12, 2026
Summary
Spinocerebellar ataxia type 6 (SCA6) affects cognition and emotion, not just motor skills. This study reveals significant cognitive deficits and anxiety in SCA6 patients, suggesting broader clinical impacts.
Area of Science:
- Neuroscience
- Genetics
- Neurology
Background:
- Spinocerebellar ataxia type 6 (SCA6) is often viewed as a pure cerebellar syndrome.
- Emerging evidence suggests non-motor symptoms, including cognitive and affective changes, are present in SCA6.
- Limited characterization of the cognitive-affective profile hinders understanding of SCA6's full clinical spectrum.
Purpose of the Study:
- To investigate non-motor manifestations in SCA6 patients.
- To characterize the cognitive-affective profile of SCA6 using standardized neuropsychological assessments.
- To contribute to a comprehensive understanding of SCA6 beyond its motor symptoms.
Main Methods:
- A monocentric, cross-sectional case-control study.
- Nine genetically confirmed SCA6 patients and eight matched healthy controls.
- Assessment included the Cerebellar Cognitive Affective/Schmahmann Syndrome Scale (CCAS-S), Scale for the Assessment and Rating of Ataxia (SARA), a comprehensive neuropsychological battery, and anxiety/depressive symptom scales.
Main Results:
- SCA6 patients exhibited impaired performance in inhibitory control, selective attention, visuoconstruction, visuomotor integration, and verbal episodic memory compared to controls.
- A trend towards poorer confrontation naming was observed in SCA6 patients.
- Significantly elevated anxiety levels were found in SCA6 patients, with cerebellar motor dysfunction correlating with more affected CCAS-S domains.
Conclusions:
- Exploratory findings suggest cognitive and affective alterations in SCA6, aligning with the Cerebellar Cognitive Affective Syndrome framework.
- Results highlight the need for targeted neuropsychological assessment in SCA6 management.
- Preliminary findings may inform individualized care strategies, though further research is needed due to sample size and potential confounds.
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