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Questions and Answers
What is the primary consequence of cerebellar dysfunction related to voluntary movements?
What is the primary consequence of cerebellar dysfunction related to voluntary movements?
Which symptom is commonly associated with cerebellar dysfunction but not with posterior column disease affecting the spinal cord?
Which symptom is commonly associated with cerebellar dysfunction but not with posterior column disease affecting the spinal cord?
Which of the following best describes the type of movements characterized as 'tremor'?
Which of the following best describes the type of movements characterized as 'tremor'?
What role does the cerebellum play in the modulation of skilled movements?
What role does the cerebellum play in the modulation of skilled movements?
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Which of the following statements about the diagnosis of tremor is accurate?
Which of the following statements about the diagnosis of tremor is accurate?
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Study Notes
Cardinal Features of Cerebellar Dysfunction
- Hypotonia
- Ataxia
- Dysarthria
- Tremor
- Ocular Motor Dysfunction
Ataxia
- Defective timing in sequential contraction of agonist and antagonist muscles
- Results in disturbances in smooth performance of voluntary acts (errors in rate, range, force, duration)
- Without cerebellar modulation, skilled movements originating in the cerebral cortex are inaccurate and poorly controlled
- May affect limbs, trunk, and gait, the affected area depends on the part of the cerebellum involved
- Usually persists despite visual cues (unlike ataxia due to posterior column disease affecting the spinal cord)
Tremor
- Rhythmic, alternating, or oscillatory movements
- Can be a normal exaggeration of movement, a primary disorder, or a symptom of a cerebellar disorder or Parkinson's disease
- Diagnosis is usually clinical
- Treatment varies by etiology
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Description
Test your knowledge on the cardinal features of cerebellar dysfunction, including hypotonia, ataxia, dysarthria, tremor, and ocular motor dysfunction. This quiz focuses on understanding the implications of these symptoms and their significance in clinical diagnosis and management.
