The role of familial sinistrality in cerebral organization.
The literature on the relationship between familial sinistrality (FS) and laterality is conflicting. A large scale investigation employing multiple measures of laterality assessment and rigorous methods of handedness and FS determination was conducted with a normal population of left- and right-handers. The results failed to find a relationship between FS and hemispheric representation of speech despite the fact that a robust relationship was found between handedness and hemispheric speech specialization. Possible reasons for these null findings are discussed.
D000293:Adolescent; D000328:Adult; D002540:Cerebral Cortex / Q000502:physiology; D004007:Dichotic Listening Tests; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D005824:Genetics, Behavioral; D006225:Hand / Q000502:physiology; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology; D011932:Reading; D013060:Speech / Q000502:physiology*; D013067:Speech Perception / Q000502:physiology