Verbal learning and memory (VLM) following pediatric stroke was
characterized in a cross-sectional neuropsychological and neuroimaging
study of 26 subjects, aged 5 to 17, with a history of pediatric stroke
and 26 age, SES, and gender matched orthopedic controls. Further
comparisons were made between the VLM profiles of stroke subjects with
right versus left hemisphere lesions and early (≤12 months)
versus late (>12 months) strokes. Overall, stroke subjects
scored significantly lower than control subjects on several VLM indices
(California Verbal Learning Test–Children; CVLT–C), as well
as on measures of intellectual functioning (IQ) and auditory
attention/working memory (Digit Span). Subgroup analyses of the
stroke population found no significant differences in VLM,
Digit Span, Verbal IQ or Performance IQ when left-hemisphere lesion
subjects were compared to right-hemisphere lesion subjects. In
contrast, early strokes were associated with significantly fewer words
recalled after delay, reduced discriminability (fewer correct hits
relative to false positive errors on recognition testing), and
relatively worse auditory attention/working memory scores (Digit
Span). These findings indicate that pediatric stroke subjects
demonstrated more VLM impairment than control subjects, and early
strokes were associated with greater recall and recognition deficits.
In stark contrast with adult-onset stroke, both left- and
right-hemisphere lesions during childhood resulted in similar VLM
performance. (JINS, 2004, 10, 742–752.)