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Corticomuscular coherence existed at the single motor unit level.
Neuroimage
January 2025
School of Rehabilitation Sciences and Engineering, University of Health and Rehabilitation Sciences, Qingdao, Shandong, China. Electronic address:
The monosynaptic cortico-motoneuronal connections suggest the possibility of individual motor units (MUs) receiving independent commands from motor cortex. However, previous studies that used corticomuscular coherence (CMC) between electroencephalogram (EEG) signals and electromyogram (EMG) signals have not directly explored the corticospinal functionality at the single motoneuron level. The objective of this study is to find out whether synchronous activities exist between the motor cortex and individual MUs.
View Article and Find Full Text PDFThalamic stereo-electroencephalography exploration in pediatric drug-resistant epilepsy: implantation technique and complications.
J Neurosurg Pediatr
January 2025
2Neurology, UT Southwestern, Dallas, Texas.
Objective: Patients with drug-resistant epilepsy (DRE) are often referred for phase II evaluation with stereo-electroencephalography (SEEG) to identify a seizure onset zone for guiding definitive treatment. For patients without a focal seizure onset zone, neuromodulation targeting the thalamic nuclei-specifically the centromedian nucleus, anterior nucleus of the thalamus, and pulvinar nucleus-may be considered. Currently, thalamic nuclei selection is based mainly on the location of seizure onset, without a detailed evaluation of their network involvement.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Vanderbilt University Medical Center, Nashville, TN, USA.
Background: Manganese (Mn) is an essential metal that serves as a cofactor for metalloenzymes important in moderating the glutamate/glutamine cycle and other oxidative stress pathways. Typically, Mn is acquired through the diet, however, Mn overexposure can arise through drinking inadequately treated well water or inhalation of Mn-containing industrial byproducts. Mn toxicity disrupts dopaminergic neurotransmission resulting in a Parkinsonian disorder referred to as manganism.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Neuroscience Institute Cavalieri Ottolenghi, Orbassano, Italy.
Background: Understanding the neuronal mechanisms of learning and memory is one of the major goals in neurophysiology and neuropsychology. Disorders related to memory consolidation are often the consequences of dynamic plasticity changes, which may lead to a reduction in spine number and density, impairing neural networks. Sleep is one of the major physiological prerequisites for memory consolidation, especially during NREM sleepwhen glymphatic system clearance takes place, too.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Douglas Research Centre/ McGill University, Montreal, QC, Canada.
Background: Altered neuronal timing and synchrony are biomarkers for Alzheimer's disease (AD) and correlate with memory impairments. Electrical stimulation of the fornix, the main fibre bundle connecting the hippocampus to the septum, has emerged as a potential intervention to restore network synchrony and memory performance in human AD and mouse models. However, electrical stimulation is non-specific and may partially explain why fornix stimulation in AD patients has yielded mixed results.
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