The pathological left-handedness syndrome☆

摘要: A clinical syndrome of pathological left-handedness (PLH) is proposed to identify the pattern correlative changes in lateral development associated with early brain injury some manifest left-handers. This believed be caused by a hemispheric lesion that predominantly left-sided (or bilateral asymmetric), which onsets before Age 6, and encroaches upon critical speech zones frontotemporal/frontoparietal cortex. The may include any or all following features: shifts manual dominance, trophic extremities, transfer speech, and/or intrahemispheric reorganization visuospatial cognitive functions. Although these correlates PLH have long been known, they not recognized as an interrelated traits constitute syndrome. Identification individuals, left-handers, will shown implications for diagnosis/remediation models recovery function.