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Anatomical left‐right asymmetry of language‐related temporal cortex is different in left‐ and right‐handers
Author(s) -
Steinmetz Helmuth,
Volkmann Jens,
Jäncke Lutz,
Freund HansJoachim
Publication year - 1991
Publication title -
annals of neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.764
H-Index - 296
eISSN - 1531-8249
pISSN - 0364-5134
DOI - 10.1002/ana.410290314
Subject(s) - planum temporale , brain asymmetry , laterality , psychology , asymmetry , neuroscience , human brain , lateralization of brain function , anatomy , medicine , physics , quantum mechanics
Asymmetry of the planum temporale, a language‐related intrasylvian area on the superior temporal gyrus, is the most remarkable anatomical left‐right asymmetry of the human brain. The in vivo application of magnetic resonance morphometry in 52 healthy volunteers (26 dextrals and 26 sinistrals) revealed that planum temporale asymmetry than right‐handers. Thus, a structural‐functional relation exists in cerebral asymmetry. The correlation is likely to reflect language representation. Because familial sinistrality influenced the anatomical pattern in left‐handers and planum temporale asymmetry is already present in the newborn, prenatal factors must play an important role in the development of functional laterality.