Abstract:
OBJECTIVES:To study the behavioral and neuroanatomic characteristics of perseverative behavior encountered on a target cancellation task in patients with neglect. METHODS:Motor perseverative behavior during line cancellation task was evaluated retrospectively in 60 patients with left hemispatial neglect from right hemispheric stroke. RESULTS:More than 30% of the patients (21 of 60) showed perseveration, manifested as either repetitive cancellation of the same target (18/21) or cancelling extra lines created by the patients themselves (3/21). Neglect severity correlated positively with the frequency of perseverative errors. Perseveration was most prominent in the rightmost portion of the array. Anterior lesions or massive lesions involving anterior and posterior regions were more likely to be associated with motor perseveration than were lesions restricted to posterior areas. CONCLUSIONS:Although the mechanism of motor perseveration remains to be elucidated, our findings suggest that the combination of aberrant approach behaviors associated with frontal lobe injury and an attentional or intentional bias toward the rightsided targets might explain the behavior.
journal_name
Neurologyjournal_title
Neurologyauthors
Na DL,Adair JC,Kang Y,Chung CS,Lee KH,Heilman KMdoi
10.1212/wnl.52.8.1569subject
Has Abstractpub_date
1999-05-12 00:00:00pages
1569-76issue
8eissn
0028-3878issn
1526-632Xjournal_volume
52pub_type
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