Search results for " lateralization"

Parietal versus temporal lobe components in spatial cognition: Setting the mid-point of a horizontal line

2009

Recent anatomo-clinical correlation studies have extended to the superior temporal gyrus, the right hemisphere lesion sites associated with the left unilateral spatial neglect, in addition to the traditional posterior-inferior-parietal localization of the responsible lesion (supramarginal gyrus, at the temporo-parietal junction). The study aimed at teasing apart, by means of repetitive transcranial magnetic stimulation (rTMS), the contribution of the inferior parietal lobule (angular gyrus versus supramarginal gyrus) and of the superior temporal gyrus of the right hemisphere, in making judgments about the mid-point of a horizontal line, a widely used task for detecting and investigating spa…

Electrophysiological evidence supports the role of sustained visuospatial attention in maintaining visual WM contents

2019

Recent empirical and theoretical work suggests that there is a close relationship between visual working memory (WM) and visuospatial attention. Here, we investigated whether visuospatial attention was involved in maintaining object representations in visual WM. To this end, the alpha lateralization and contralateral delay activity (CDA) were analyzed as neural markers for visuospatial attention and visual WM storage, respectively. In the single-task condition, participants performed a grating change-detection task. To probe the role of visuospatial attention in maintaining WM contents, two color squares were presented above and below the fixation point during the retention interval, which …

FOXP2 expression and gray matter density in the male brains of patients with schizophrenia

2021

Common genetic variants ofFOXP2may contribute to schizophrenia vulnerability, but controversial results have been reported for this proposal. Here we evaluated the potential impact of the commonFOXP2rs2396753 polymorphism in schizophrenia. It was previously reported to be part of a risk haplotype for this disease and to have significant effects on gray matter concentration in the patients. We undertook the first examination into whether rs2396753 affects the brain expression ofFOXP2and a replication study of earlier neuroimaging findings of the influence of this genetic variant on brain structure.FOXP2expression levels were measured in postmortem prefrontal cortex samples of 84 male subject…

Diagnozowanie i wspieranie rozwoju dziecka z zakłóceniami lateralizacji, na etapie edukacji przedszkolnej

2018

Okres przedszkolny jest najlepszym i najbardziej efektywnym czasem do korygowania i usprawniania rozwoju lateralizacji u dzieci. Na nauczycielach przedszkola spoczywa obowiązek podjęcia działań diagnostycznych i pomocowych wobec dzieci z nietypowym lub zakłóconym modelem lateralizacji. Wyniki przeprowadzonych badań ukazały, że nauczycielki przedszkola posiadają pewną wiedzę na temat lateralizacji, choć w sposób wyraźny zaznaczają się w niej braki, co potwierdziła analiza poszczególnych kwestii badawczych. Popularyzowanie tematu lateralizacji wydaje się więc ciągle uzasadnione.

Examining the contribution of motor movement and language dominance to increased left lateralization during sign generation in native signers

2016

Highlights • We tested hemispheric lateralization for language in deaf native signers. • Signers were more strongly left lateralized for overt than covert sign generation. • We found stronger left lateralization for BSL than for English production. • Stronger left lateralization for BSL is not driven by motoric activity alone. • Stronger left lateralization is not driven by language dominance.

Enhancing memory performance with rTMS in healthy subjects and individuals with Mild Cognitive Impairment: the role of the right dorsolateral prefron…

2012

A debated question in the literature is the degree of anatomical and functional lateralization of the executive control processes subserved by the dorsolateral prefrontal cortex (DLPFC) during recognition memory retrieval. We investigated if transient inhibition and excitation of the left and right DLPFC at retrieval by means of repetitive transcranial magnetic stimulation (rTMS) modulate recognition memory performance in 100 healthy controls (HCs) and in 8 patients with Mild Cognitive Impairment (MCI). Recognition memory tasks of faces, buildings and words were used in different experiments. rTMS-inhibition of the right DLPFC enhanced recognition memory of verbal and non verbal material in…

Cognitive priming in sung and instrumental music: Activation of inferior frontal cortex

2006

Neural correlates of the processing of musical syntax-like structures have been investigated via expectancy violation due to musically unrelated (i.e., unexpected) events in musical contexts. Previous studies reported the implication of inferior frontal cortex in musical structure processing. However - due to the strong musical manipulations - activations might be explained by sensory deviance detection or repetition priming. Our present study investigated neural correlates of musical structure processing with subtle musical violations in a musical priming paradigm. Instrumental and sung sequences ended on related and less-related musical targets. The material controlled sensory priming com…

Can Wii modulate visuospatial attention lateralization?

2012

Detrimental noise effects on brain's speech functions.

2009

Background noise has become part of our everyday life in modern societies. Its presence affects both the ability to concentrate and communicate. Some individuals, like children, the elderly, and non-native speakers have pronounced problems in noisy environments. Here we review evidence suggesting that background noise has both transient and Sustained detrimental effects on central speech processing. Studies on the effects of noise on neural processes have demonstrated hemispheric reorganization in speech processing in adult individuals during background noise. During noise, the well-known left hemisphere dominance in speech discrimination became right hemisphere preponderant. Furthermore, l…