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Background: Classical literature has pointed at lateralization of the relationship between memory scores and cerebral hemisphere injury. Epilepsy studies have suggested an association between left hippocampal damage and verbal memory deficits, and between right hippocampal damage and visual memory deficits. We aimed to explore this concept in the context of tauopathy due to Alzheimer's disease.
View Article and Find Full Text PDFModulation of initial leftward bias in visual search by parietal tDCS.
PLoS One
December 2024
Psychological Science Research Institute, UCLouvain, Louvain-la-Neuve, Belgium.
Transcranial direct current stimulation (tDCS) has the potential to modulate spatial attention by enhancing the activity in one hemisphere relative to the other. This study aims to inform neurorehabilitation strategies for spatial attention disorders by investigating the impact of tDCS on the performance of healthy participants. Unlike prior research that focused on visual detection, we extended the investigation to visual search and visual imagery using computerized neuropsychological tests.
View Article and Find Full Text PDFLanguage Dominance in Left-Handers: Unveiling Left Hemisphere Global Dominance With Specific Right Hemisphere Regional Dominance.
Cureus
November 2024
Department of Neurosurgery, Fukushima Medical University, Fukushima, JPN.
Introduction The degree to which each human brain hemisphere governs specific cognitive processes, such as language and handedness (the preference or dominance of one hand over the other), varies across individuals. Research has explored the nature of language laterality in left-handed (LH) individuals, indicating that left-hemisphere dominance for language is commonly observed across both left- and right-handed populations. Advanced imaging techniques, including functional transcranial Doppler sonography and fMRI, have revealed subtle differences in language lateralization between LH and right-handed (RH) individuals, particularly in semantic processing tasks.
View Article and Find Full Text PDFCemented Modular Bipolar Hemiarthroplasty for Displaced Femoral Neck Fractures in the Elderly.
Cureus
November 2024
Trauma and Orthopedic Surgery, Services Hospital Lahore, Lahore, PAK.
Objective To determine the outcomes of cemented modular bipolar hemiarthroplasty for displaced femoral neck fractures in the elderly. Methodology This prospective study involved 102 elderly patients with clinically and radiologically confirmed displaced femoral neck fractures and was conducted in the Department of Trauma and Orthopedic Surgery, Unit-1, Services Hospital, Lahore. Cemented bipolar hemiarthroplasty was performed on all patients.
View Article and Find Full Text PDFLong-term forced-use therapy after sensorimotor cortex lesions restores contralesional hand function and promotes its preference in Macaca mulatta.
Exp Brain Res
December 2024
Division of Basic Biomedical Sciences, Laboratory of Neurological Sciences, The University of South Dakota, Sanford School of Medicine, Vermillion, SD, USA.
Injury to one cerebral hemisphere can result in paresis of the contralesional hand and subsequent preference of the ipsilesional hand in daily activities. However, forced use therapy in humans can improve function of the contralesional paretic hand and increase its use in daily activities, although the ipsilesional hand may remain preferred for fine motor activities. Studies in monkeys have shown that minimal forced use of the contralesional hand, which was the preferred hand prior to brain injury, can produce remarkable recovery of function.
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