Rodrigues JDC, da Fontoura DR, de Salles JF. Acquired dysgraphia in adults following right or left-hemisphere stroke.
Dement Neuropsychol 2014;
8:236-242. [PMID:
29213909 PMCID:
PMC5619400 DOI:
10.1590/s1980-57642014dn83000007]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Objective
This study aimed to assess the strengths and difficulties in word and
pseudoword writing in adults with left- and right-hemisphere strokes, and
discuss the profiles of acquired dysgraphia in these individuals.
Methods
The profiles of six adults with acquired dysgraphia in left- or
right-hemisphere strokes were investigated by comparing their performance on
word and pseudoword writing tasks against that of neurologically healthy
adults. A case series analysis was performed on the patients whose
impairments on the task were indicative of acquired dysgraphia.
Results
Two patients were diagnosed with lexical dysgraphia (one with left hemisphere
damage, and the other with right hemisphere damage), one with phonological
dysgraphia, another patient with peripheral dysgraphia, one patient with
mixed dysgraphia and the last with dysgraphia due to damage to the graphemic
buffer. The latter patients all had left-hemisphere damage (LHD). The
patterns of impairment observed in each patient were discussed based on the
dual-route model of writing.
Conclusion
The fact that most patients had LHD rather than right-hemisphere damage (RHD)
highlights the importance of the former structure for word processing.
However, the fact that lexical dysgraphia was also diagnosed in a patient
with RHD suggests that these individuals may develop writing impairments due
to damage to the lexical route, leading to heavier reliance on phonological
processing. Our results are of significant importance to the planning of
writing interventions in neuropsychology.
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