نتایج جستجو برای: cerebral dominance

تعداد نتایج: 209374  

Journal: :Advances in cognitive neurodynamics 2021

The cerebral cortex usually governs contralateral body parts in sensation and movements. rule of dominance is well established on the basis a long history human animal experiments. We also confirmed for primary (M1) secondary (M2) motor cortices controlling unilateral forelimb movements behaving rats. However, we found that their posterior parietal (PPC) neurons preferentially represent ipsilat...

Journal: :Stroke 1975
S Lavy E Melamed Z Portnoy

Regional cerebral blood flow (rCBF) measurements were performed over the contralateral hemisphere by the 133Xe intracarotid injection method in 20 patients with acute cerebral infarction in the territory of the internal carotid artery. The rCBF was found to be reduced, sometimes remarkably, in all of the patients. The mean reduction was 30 percent to 36 percent from the lowest normal value for ...

2011
Thomas S. Scerri William M. Brandler Silvia Paracchini Andrew P. Morris Susan M. Ring Alex J. Richardson Joel B. Talcott John Stein Anthony P. Monaco

Approximately 90% of humans are right-handed. Handedness is a heritable trait, yet the genetic basis is not well understood. Here we report a genome-wide association study for a quantitative measure of relative hand skill in individuals with dyslexia [reading disability (RD)]. The most highly associated marker, rs11855415 (P = 4.7 × 10(-7)), is located within PCSK6. Two independent cohorts with...

2014
David Hecht

Mounting evidence suggest that the right-hemisphere (RH) has a relative advantage, over the left-hemisphere (LH), in mediating social intelligence - identifying social stimuli, understanding the intentions of other people, awareness of the dynamics in social relationships, and successful handling of social interactions. Furthermore, a review and synthesis of the literature suggest that pro-soci...

Journal: :Indian journal of physiology and pharmacology 2004
D S Jaju M B Dikshit V R Purandare S Raje

We hypothesized that cerebral dominance may contribute to differences in cardio-vascular responses of right-handers (RH) and left-handers (LH) to autonomic stressors. We tested this hypothesis by exposing 14 RH, and 14 LH males to category I tests in which the hand and cerebral cortex were involved in performing the test viz.--i) Cold pressor test (CPT), ii) Handgrip dynamometry (HGD) and; cate...

Journal: :Brain and cognition 2014
Marina Boban Petra Crnac Anamari Junaković Zsolt Garami Branko Malojčić

OBJECTIVE Transcranial Doppler sonography (TCD) enables monitoring of blood flow velocities (BFVs) in basal cerebral arteries during different cognitive tasks performance with great temporal resolution. So far, BFVs changes during mental activity were monitored primarily in middle cerebral arteries (MCAs) and little is known about these changes in anterior cerebral arteries (ACAs). AIM To det...

2012
Joanna C. Downes Bilge Birsoy Kyle C. Chipman Joel H. Rothman

Complex animals display bilaterally asymmetric motor behavior, or "motor handedness," often revealed by preferential use of limbs on one side. For example, use of right limbs is dominant in a strong majority of humans. While the mechanisms that establish bilateral asymmetry in motor function are unknown in humans, they appear to be distinct from those for other handedness asymmetries, including...

Journal: :Neural computation 1997
Christian Piepenbrock Helge J. Ritter Klaus Obermayer

Correlation-based learning (CBL) has been suggested as the mechanism that underlies the development of simple-cell receptive fields in the primary visual cortex of cats, including orientation preference (OR) and ocular dominance (OD) (Linsker, 1986; Miller, Keller, & Stryker, 1989). CBL has been applied successfully to the development of OR and OD individually (Miller, Keller, & Stryker, 1989; ...

Journal: :Science 2013
Dorothy V M Bishop

In most people, language is processed predominantly by the left hemisphere of the brain, but we do not know how or why. A popular view is that developmental language disorders result from a poorly lateralized brain, but until recently, evidence has been weak and indirect. Modern neuroimaging methods have made it possible to study normal and abnormal development of lateralized function in the de...

Journal: :Annals of the New York Academy of Sciences 1973
M S Gazzaniga

Ever since the National Institutes of Health labeled the diffuse problems of learning disabilities in children as results of minimal brain dysfunction, a variety of research efforts have been made to explain the syndrome. To a large extent, these efforts have met with only limited success because of disagreement over whether, in fact, there is organic involvement. Even if there had been agreeme...

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