Journal ArticleDOI
Cerebral lateralization. Biological mechanisms, associations, and pathology: II. A hypothesis and a program for research.
TLDR
The hypothesis is that slowed growth within certain zones of the left hemisphere is likely to result in enlargement of other cortical regions, in particular, the homologous contralateral area, but also adjacent unfaffected regions.Abstract:
Part two of this three-part series commences with anomalous dominance and special talents. Part one appears in a previous issue of theArchives. 1 ANOMALOUS DOMINANCE AND SPECIAL TALENTS According to our hypothesis, slowed growth within certain zones of the left hemisphere is likely to result in enlargement of other cortical regions, in particular, the homologous contralateral area, but also adjacent unfaffected regions. The influences that favor anomalous dominance may thus favor talents associated with superior development of certain regions either in the right hemisphere or in adjacent parts of the left hemisphere. Even with excessive retardation of growth and the resultant migration abnormalities and learning disorders (LD), high talents may exist as a result of compensatory enlargement of other cortical regions. Several types of data are in concordance with these conclusions. Several studies have claimed that the average level of spatial talents is higher in male subiects. 2 Hierread more
Citations
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Critical periods of vulnerability for the developing nervous system: evidence from humans and animal models.
Deborah C. Rice,Stan Barone +1 more
TL;DR: Of critical concern is the possibility that developmental exposure to neurotoxicants may result in an acceleration of age-related decline in function, and the fact that developmental neurotoxicity that results in small effects can have a profound societal impact when amortized across the entire population and across the life span of humans.
Journal ArticleDOI
A review of MRI findings in schizophrenia
TL;DR: The 193 peer reviewed MRI studies reported in the current review span the period from 1988 to August, 2000 and have led to more definitive findings of brain abnormalities in schizophrenia than any other time period in the history of schizophrenia research.
Journal ArticleDOI
BIRDSONG AND HUMAN SPEECH: Common Themes and Mechanisms
TL;DR: Human speech and birdsong have numerous parallels, with striking similarities in how sensory experience is internalized and used to shape vocal outputs, and how learning is enhanced during a critical period of development.
Journal ArticleDOI
Theories of developmental dyslexia: insights from a multiple case study of dyslexic adults
Franck Ramus,Stuart Rosen,Steven C. Dakin,Brian L. Day,Juan M. Castellote,Sarah White,Uta Frith +6 more
TL;DR: The present data support the phonological theory of dyslexia, while acknowledging the presence of additional sensory and motor disorders in certain individuals.
Journal ArticleDOI
The ratio of 2nd to 4th digit length: a predictor of sperm numbers and concentrations of testosterone, luteinizing hormone and oestrogen.
TL;DR: It is shown that 2D:4D in right and left hands has a sexually dimorphic pattern and is probably established in utero, which raises the possibility that patterns of digit formation may relate to spermatogenesis and hormonal concentrations.
References
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Journal ArticleDOI
The assessment and analysis of handedness: The Edinburgh inventory
TL;DR: An inventory of 20 items with a set of instructions and response- and computational-conventions is proposed and the results obtained from a young adult population numbering some 1100 individuals are reported.
MonographDOI
The neural crest
TL;DR: The Neural Crest is a structure unique to the vertebrate embryo, which has only a transient existence in early embryonic life as discussed by the authors, and the ontogeny of the neural crest embodies the most important issues in developmental biology.
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A cortical network for directed attention and unilateral neglect.
TL;DR: A network approach to the localization of complex functions offers an alternative to more extreme approaches, some of which stress an exclusive concentration of function within individual centers in the brain and others which advocate a more uniform (equipotential or holistic) distribution.
Journal ArticleDOI
Synaptic density in human frontal cortex — Developmental changes and effects of aging
TL;DR: The decline in synaptic density observed between ages 2--16 years was accompanied by a slight decrease in neuronal density, and human cerebral cortex is one of a number of neuronal systems in which loss of neurons and synapses appears to occur as a late developmental event.
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