Related Experiment Videos
Ideomotor apraxia in Huntington's disease
1Section of Neurology, University of Manitoba, Winnipeg, Canada.
Archives of Neurology
|January 1, 1991
Summary
Ideomotor apraxia, a movement disorder, affects individuals with Huntington's disease, impacting movement selection and sequencing. This study found apraxia linked to disease duration and postural issues, suggesting subcortical brain involvement.
Area of Science:
- Neuroscience
- Neurology
- Movement Disorders
Background:
- Ideomotor apraxia is characterized by difficulties in selecting and sequencing movements.
- Huntington's disease (HD) is a progressive neurodegenerative disorder affecting motor, cognitive, and psychiatric functions.
Purpose of the Study:
- To prospectively evaluate the prevalence of apraxia in individuals with Huntington's disease.
- To correlate apraxic errors with motor and cognitive deficits in HD patients.
Main Methods:
- Prospective evaluation of nine individuals with Huntington's disease for apraxia.
- Correlation analysis of apraxic errors with motor and cognitive function assessments.
Main Results:
- Ideomotor apraxia was present in 33% of HD patients (mean disease duration 10.4 years).
- Apraxic errors occurred in 26% of all movements assessed in the group.
- Apraxia correlated significantly with disease duration and postural abnormalities, but not with imitation or gesture recognition.
- Apraxia was associated with imitation errors of nonsymbolic movements.
Conclusions:
- Apraxia is a relevant symptom in Huntington's disease, particularly in later stages.
- The findings suggest that apraxia in HD may stem from the dysfunction of subcortical motor structures.
- This contrasts with the typical understanding of apraxia originating from cortical damage.