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Related Concept Videos

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Major Somatic Sensory Pathways

Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the posterior columns...
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Alterations in Muscle Tone ll

Alterations in muscle tone are common manifestations of neurological disorders and reflect dysfunction within different nervous system regions. Spasticity, paratonia, and dystonia represent distinct forms of hypertonia, each with unique mechanisms, clinical features, and diagnostic importance.CharacteristicsSpasticity happens from upper motor neuron lesions and is characterized by velocity-dependent resistance to passive movement. Clinical features include:Exaggerated deep tendon reflexesClonus...
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Somatic Spinal Reflexes

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Related Experiment Video

Updated: Jun 17, 2026

Cerebellar Regional Dissection for Molecular Analysis
08:51

Cerebellar Regional Dissection for Molecular Analysis

Published on: December 5, 2020

Spinocerebellar ataxias.

Hélio A G Teive1

  • 1Movement Disorders Unit, Neurology Service, Internal Medicine Department, Hospital de Clínicas, Federal University of Paraná, Curitiba PR, Brazil. hagteive@mps.com.br

Arquivos De Neuro-Psiquiatria
|January 14, 2010
PubMed
Summary

Spinocerebellar ataxias (SCAs) are diverse neurodegenerative disorders. Clinical examination aids in distinguishing SCA types, guiding genetic testing for accurate diagnosis.

Area of Science:

  • Neurodegenerative diseases
  • Cerebellar ataxia
  • Genetics

Background:

  • Spinocerebellar ataxias (SCAs) are a group of neurodegenerative diseases.
  • Characterized by progressive cerebellar ataxia.
  • Associated symptoms include ophthalmoplegia, cognitive dysfunction, and dementia.

Purpose of the Study:

  • To review the clinical and genetic aspects of major Spinocerebellar ataxia (SCA) types.
  • Provide an overview of current knowledge on SCA classification and genetics.

Main Methods:

  • Literature review using PUBMED and OMIM databases.
  • Focused on clinical and genetic data of Spinocerebellar ataxias (SCAs).

Main Results:

  • Thirty Spinocerebellar ataxia (SCA) types are identified, with 16 associated genes.

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A Simple Composite Phenotype Scoring System for Evaluating Mouse Models of Cerebellar Ataxia
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A Simple Composite Phenotype Scoring System for Evaluating Mouse Models of Cerebellar Ataxia

Published on: May 21, 2010

Related Experiment Videos

Last Updated: Jun 17, 2026

Cerebellar Regional Dissection for Molecular Analysis
08:51

Cerebellar Regional Dissection for Molecular Analysis

Published on: December 5, 2020

A Simple Composite Phenotype Scoring System for Evaluating Mouse Models of Cerebellar Ataxia
07:33

A Simple Composite Phenotype Scoring System for Evaluating Mouse Models of Cerebellar Ataxia

Published on: May 21, 2010

  • Common types include SCA3 (Machado-Joseph disease), SCA10, SCA7, SCA2, SCA1, and SCA6.
  • SCAs exhibit significant genotypic and phenotypic heterogeneity.
  • Conclusions:

    • Clinical neurological examination is crucial for assessing Spinocerebellar ataxia (SCA) patients.
    • A clinical algorithm can assist in patient screening before molecular testing.
    • This approach helps in determining the correct etiology of the disease.