The ontogeny of hemispheric specialization: some old hypotheses revisited.
This paper re-examines two hypotheses on the ontogeny of hemispheric specialization that long ago fell into disfavor in neuropsychology. It is argued that these hypotheses, equipotentiality and progressive lateralization, may have suffered from misinterpretation that fostered premature acceptance of the developmental invariance view of hemispheric specialization. An alternative view is presented that incorporates both hypotheses within a neurodevelopmental context using anatomical (postmortem) and childhood aphasia data.
Department of Psychiatry and Biobehavioral Sciences, UCLA School of Medicine 90024.
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Satz
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Strauss
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Whitaker
D000293:Adolescent; D000328:Adult; D001288:Attention / Q000502:physiology; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000502:physiology*; D002648:Child; D002675:Child, Preschool; D004292:Dominance, Cerebral / Q000502:physiology*; D006801:Humans; D007223:Infant; D007804:Language Development; D013060:Speech / Q000502:physiology*