Written language acquisition after left or right hemidecortication in infancy

When written language is acquired in only one hemisphere because of hemidecortication in infancy, the left hemisphere is superior to the right at using morphophonemic rules to read and spell unfamiliar words, and at exploiting the structure of sentence units to achieve rapid reading of meaning in prose. The ability to learn names for logographs, however, is better in the right hemisphere than in the left. The greater mastery of written language in the left hemisphere is a result, not of an enhanced facility for making cross-modal associations between sounds and signs, but of a superior access to the morphophonemic rule system and the higher-order textual constraints of English.