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The study of language development in children with early unilateral focal brain lesions provides a unique opportunity to investigate the relationship between language function and its cerebral substrate.
Focal lesions involving left language areas in children have relatively mild consequences on language development in comparison with similar injuries acquired later in adulthood, both in the case of lesions acquired in the pre-perinatal periods (PFL) and in the case of lesions acquired after language onset. Whether the lesions occur before or after the onset of speech and language acquisition is a crucial factor determining language outcome.
A series of studies on the early phases of language acquisition of children with pre-perinatal left- and right-hemisphere focal lesions (LHL, RHL) report delays in achieving early language development milestones, including late ...