Some characteristics of acquired aphasias during adulthood - frequency
, severity, type of aphasia - would change with aging. In particular,
Wernicke's aphasia patients are repeatedly reported to be older than B
roca's. Several hypotheses are proposed to account for these age-relat
ed changes. One of the explanations puts forward hypothetical changes
in the neural substrate with aging. A second hypothesis refers to the
involvement of cognitive and behavioral changes occurring in elderly.
A third one claims that changes in functional distribution of language
in brain (between hemispheres and within left hemisphere) may occur w
ith aging.