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Chinese writing function in patients with left versus right putaminal hemorrhage
1Department of Psychology, National Taiwan University, Taipei 10764, Taiwan. huams@ccms.ntu.edu.tw
Journal of Clinical and Experimental Neuropsychology
|June 19, 2001
Summary
Subcortical stroke impacts Chinese writing. Left strokes affect language-based writing (spontaneous, dictation), while right strokes impair non-language-based writing (copying), indicating distinct functional deficits.
Area of Science:
- Neuroscience
- Linguistics
- Neurology
Background:
- Subcortical stroke can affect various cognitive functions, including writing.
- Understanding the specific writing deficits associated with different stroke locations is crucial for rehabilitation.
Purpose of the Study:
- To investigate the effects of left and right subcortical strokes on Chinese writing functions.
- To differentiate between language-dependent and language-independent writing impairments.
Main Methods:
- Evaluated writing functions (spontaneous writing, writing to dictation, writing from copy) in patients with left or right subcortical stroke and normal controls.
- Administered non-writing linguistic tests to assess language abilities.
Main Results:
- Both left and right subcortical stroke groups showed writing impairments compared to controls.
- Left subcortical stroke primarily affected spontaneous writing and writing to dictation, linked to aphasia.
- Right subcortical stroke primarily affected writing from copy, independent of linguistic deficits.
Conclusions:
- Left subcortical lesions disrupt language networks, leading to language-based writing deficits.
- Right subcortical lesions impact non-language-based writing, suggesting distinct neural substrates.
- Subcortical lesions in the putamen and surrounding white matter have differential effects on writing, mirroring cortical lesion effects.