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Local effective connectivity changes after transcranial direct current stimulation in obsessive-compulsive disorder patients.
J Affect Disord
January 2025
School of Medicine and Health, Department of Diagnostic and Interventional Neuroradiology, Technical University of Munich, Munich, Germany; School of Medicine and Health, TUM-NIC Neuroimaging Center, Technical University of Munich, Munich, Germany.
Aim: This study investigates the effects of transcranial direct current stimulation (tDCS) on brain network connectivity in individuals with obsessive-compulsive disorder (OCD).
Methods: In a randomized, double-blind, sham-controlled experimental design anodal tDCS (vs. sham) was applied in a total of 43 right-handed patients with OCD, targeting the right pre-supplementary motor area (pre-SMA).
Independent component analysis of brain network in drug-resistant epilepsy patients with vagus nerve stimulators.
Int J Neurosci
January 2025
Department of Functional Neurosurgery, Beijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
Article Synopsis
- The study aimed to analyze the changes in brain network activity, specifically the default mode network (DMN), frontoparietal network (FPN), and cerebellar network (CN), in patients with drug-resistant epilepsy (DRE) after they received vagus nerve stimulation (VNS).
- Fifteen patients underwent resting-state fMRI scans, with the data analyzed to compare brain activity before and after VNS, revealing both increases and decreases in various brain regions associated with DMN, FPN, and CN.
- The findings indicate that VNS leads to distinct activity changes in the brain networks related to sensorimotor, language, memory, and emotion, but the differences in activity in the
Cognitive Impairment in MASLD is associated with Amygdala-Related Connectivity Dysfunction in the Prefrontal and Sensory Cortex.
J Integr Neurosci
December 2024
Department of Radiology, The Affiliated Hospital of Hangzhou Normal University, 310015 Hangzhou, Zhejiang, China.
Background: Metabolic dysfunction-associated steatotic liver disease (MASLD) is a common metabolism-related multisystem clinical disorder, often accompanied by a high comorbidity of mild cognitive impairment (MCI). Increasing evidence suggests that the amygdala is crucial in cognitive processing during metabolic dysfunction. Nevertheless, the role of the amygdala in the neural mechanisms of MASLD with MCI (MCI_MASLD) remains unclear.
View Article and Find Full Text PDFTranscranial ultrasound stimulation effect in the redundant and synergistic networks consistent across macaques.
Netw Neurosci
December 2024
Precision Imaging, School of Medicine, University of Nottingham, Nottingham, United Kingdom.
Low-intensity transcranial ultrasound stimulation (TUS) is a noninvasive technique that safely alters neural activity, reaching deep brain areas with good spatial accuracy. We investigated the effects of TUS in macaques using a recent metric, the synergy minus redundancy rank gradient, which quantifies different kinds of neural information processing. We analyzed this high-order quantity on the fMRI data after TUS in two targets: the supplementary motor area (SMA-TUS) and the frontal polar cortex (FPC-TUS).
View Article and Find Full Text PDFCortical Activation during Dorsi-Plantarflexion Tasks and its Association with Sensorimotor Function in Ankle Instability.
Med Sci Sports Exerc
December 2024
Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, CHINA.
Objective: This study aimed to investigate differences in cortical activation between individuals with and without chronic ankle instability (CAI) during a dorsi-plantarflexion task and further explore its association with sensorimotor function.
Methods: In this cross-sectional study, 62 participants were recruited, including 31 adults with CAI and 31 healthy adults. Sensorimotor functions, including joint position sense and force sense, were tested using absolute error associated with joint position reproduction and force reproduction tasks.
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