نتایج جستجو برای: cerebral dominance

تعداد نتایج: 209374  

Journal: :iranian journal of psychiatry 0
anahita baghdasarians department of psychology, azad university central unit of tehran, iran afsaneh bagheri department of psychiatry, university of welfare and social sciences, tehran, iran farbod fadai department of psychiatry, university of welfare and social sciences, tehran, iran

objective: in recent years different hypotheses with respect to the formation of cerebral laterality were proposed. some of the researchers claim that cerebral dominance and laterality are determined by genetic factors, just as the case with eye color and blood type. however, another group states that in addition to genetic factors, environmental factors, too, have a remarkable role in hemisphe...

Journal: :iranian journal of otorhinolaryngology 0
atefe davudazde department of audiology, school of rehabilitation sciences, iran university of medical sciences, tehran, iran. abdolreza shaibanizadeh department of audiology, school of rehabilitation sciences, iran university of medical sciences, tehran, iran. zahra jafari rehabilitation research center, school of rehabilitation sciences, iran university of medical sciences, tehran, iran. frazin fahimnia department of linguistics, linguistics faculty, institute for humanities and cultural studies, tehran, iran. masoud haghani department of biostatistics, school of management and medical information science, iran university of medical sciences, tehran, iran.

introduction: emotional words in comparison with neutral words have different hemispheric specialization. it is assumed that the right hemisphere has a role in processing every kind of emotional word. the objective of the present study was the development of a persian version of the dichotic emotional word test and evaluate its validation among adult persian speakers.   materials and methods: t...

Journal: :Neuroreport 2001
T Verstynen R Tierney T Urbanski A Tang

Early life environmental manipulations have been shown to affect hippocampal-dependent learning, hippocampal volume and cerebral lateralization. In this study, we investigated the effects of neonatal stimulation on hippocampal volumetric asymmetry. Long-Evans hooded rats were exposed to a novel non-home environment 3 min daily for the first 3 weeks of life. Histological measures of the left and...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Hesheng Liu Steven M Stufflebeam Jorge Sepulcre Trey Hedden Randy L Buckner

Cerebral lateralization is a fundamental property of the human brain and a marker of successful development. Here we provide evidence that multiple mechanisms control asymmetry for distinct brain systems. Using intrinsic activity to measure asymmetry in 300 adults, we mapped the most strongly lateralized brain regions. Both men and women showed strong asymmetries with a significant, but small, ...

Journal: :Journal of Neurology, Neurosurgery & Psychiatry 1977

Journal: :Journal of neurology, neurosurgery, and psychiatry 1977
P T Quinn G Andrews

A test of cerebral dominance for language was administered to 51 cerebral palsied adults. The test consisted of dichotically presented words and in normal speaking adults had previously demonstrated very marked right ear superiority, interpreted as left cerebral dominance. The group of cerebral palsied subjects did not show the predicted right ear superiority. This finding may represent a chanc...

Journal: :Neuropsychologia 2007
Rachel Hull Jyotsna Vaid

Two meta-analyses of 66 behavioral studies examined variables influencing functional cerebral lateralization of each language of brain-intact bilingual adults. Functional lateralization was found to be primarily influenced by age of onset of bilingualism: bilinguals who acquired both languages by 6 years of age showed bilateral hemispheric involvement for both languages, whereas those who acqui...

Journal: :Vision Research 2002
Greg A. Woodbury Rick van der Zwan William G. Gibson

We describe a modification to a standard correlation model for the development of the geniculocortical projection that relays visual input to the visual cortex. The modification is to include threshold-activation of cortical cells as opposed to linear activation and it is shown that this can account for topographic map refinement (TMR). This contrasts with other models that require cortical cel...

2007
Sidney J. Segalowitz Jacqueline S. Chapman

The study examined the relationship between perinatal stress and decreased right handedness and decreased left cerebral dominance for speech with 215 children born prematurely, followed from birth, and tested at age 5. Results indicated that neither hand preference nor hand performance correlated with degree of perinatal stress and that eye preference was associated with perinatal stress though...

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