نتایج جستجو برای: hemisphere

تعداد نتایج: 24016  

Gerstmann’s syndrome is caused by a left (dominant) inferior parietal lesion, particularly involving the angular gyrus or subjacent white matter of the left hemisphere. We describe case of an 80 year old right handed man admitted to our hospital with history of sudden onset of blurred vision. At first in neurological examination, he had left hemonymus hemianopia and characteristic features of G...

2008
Cem Yuksel

In this paper we present a simple method for handling projections on the hemisphere. The proposed method defines a coordinate system on the hemisphere surface that effectively converts the hemisphere to an infinite plane tangent to the top of the hemisphere, which is called the gradient space. Using this coordinate system, projections onto the hemisphere are replaced by simple perspective proje...

Journal: :iranian journal of neurology 0
davood sobhani rad department of speech therapy, school of rehabilitation, tehran university of medical sciences, tehran, iran.

pragmatics is defined as appropriate use of language either to comprehend ideas or to interact in social situations effectively. pragmatic competence, which is processed in the right hemisphere, comprises a number of interrelated skills that manifest in a range of adaptive behaviors. due to the widespread influence of language in communication, studying pragmatic profiles, by developing appropr...

Journal: :Geophysical Research Letters 2021

Significant progress has been made in our understanding of extratropical impacts on the tropical climate via energetics framework. It is question whether impact thermal forcing one hemisphere would extend far into high-latitudes other hemisphere. We examine possibility pole-to-pole linkage atmospheric teleconnections by imposing a cyclic surface northern extratropics an aquaplanet slab ocean mo...

Journal: :Cortex; a journal devoted to the study of the nervous system and behavior 2004
Markus Hausmann Ian J Kirk Michael C Corballis

The degree of manual asymmetry is generally assumed to vary with task complexity. However, task complexity as a factor in manual asymmetries has rarely been examined directly. Further, the results of psychophysical studies indicate that manual asymmetry increases with task complexity, while physiological studies consistently report a reduction of manual asymmetries in more complex tasks. The us...

Journal: :Brain and cognition 2010
Keith B Lyle Jessica M Martin

Retrieval of memories is enhanced when bilateral saccades are made immediately before attempting retrieval. One hypothesis is that saccades enhance retrieval by increasing interaction of the brain hemispheres. To test this, subjects viewed arrays of lateralized letters and indicated whether target letters matched either of two probe letters. Matching targets and probes were presented to either ...

Journal: :Progress in neuro-psychopharmacology & biological psychiatry 2008
V S Rotenberg

Depression is characterized by the functional insufficiency of both left and right hemispheres. Patients who respond to antidepressants are characterized by a relatively higher left hemisphere activity in comparison to non-responders, and successful treatment with antidepressants increases left hemisphere activity. Left hemisphere is responsible for the goal-oriented behavior that includes sear...

2015
Alexandra Ossowski Marlene Behrmann

Studies show that emerging left hemisphere lateralization for word reading is correlated with emerging left hemisphere lateralization for high spatial frequency (HSF) information. However, it is currently unclear whether left lateralization is partially caused by a pre‐ existing left hemisphere bias for high spatial frequency visual information (such as that found in words), or if the left hemi...

Journal: :AJNR. American journal of neuroradiology 1996
A Li F Z Yetkin R Cox V M Haughton

PURPOSE To compare activation of the ipsilateral cerebral hemisphere during tactile sensory and motor tasks involving the right and left hands. METHODS Eight volunteers had functional MR imaging to measure the extent of cerebral hemisphere activation during a motor task and sensory task involving each hand. Hemispheric indexes (left hemisphere activation minus right hemisphere activation)/(le...

2017
Tatsuya ISHIKAWA Yoshihiro MURAGAKI Takashi MARUYAMA Kayoko ABE Takakazu KAWAMATA

This study examined the accuracy of functional magnetic resonance imaging (fMRI) in identifying the language-dominant hemisphere and the situations in which the Wada test can be skipped among patients with gliomas located near speech areas. We examined 74 patients [48 men (64.9%); mean ± standard deviation age of 42.7 ± 13.6 years (range: 13 to 70 years); 71 right-handed, 2 left-handed, and 1 a...

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