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The effects of transcutaneous auricular vagus nerve stimulation (taVNS) on cholinergic neural networks in humans: A neurophysiological study.
Clin Neurophysiol
January 2025
Department of Medicine and Surgery, Unit of Neurology, Neurophysiology, Neurobiology and Psichiatry, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo, 21 - 00128 Roma, Italy; Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 200 - 00128 Roma, Italy.
Objective: The mechanisms of actions of transcutaneous auricular vagus nerve stimulation (taVNS) are still unclear, however the activity of the cholinergic system seems to be critical for the induction of VNS-mediated plasticity. Transcranial Magnetic Stimulation (TMS) is a well-suited, non-invasive tool to investigate cortical microcircuits involving different neurotransmitters. Herein, we evaluated the effect of taVNS on short-latency afferent inhibition (SAI), a TMS paradigm specifically measuring cholinergic neurotransmission.
View Article and Find Full Text PDFAssociation of advanced glycation end products with ear lobe crease: A cross-sectional study.
J Diabetes
April 2024
Department of Endocrinology, The First Medical Center of Chinese PLA General Hospital, Beijing, China.
Objective: Several studies have demonstrated a significant association between the presence of the ear lobe crease (ELC) and cardiovascular disease. Advanced glycation end-products (AGEs) can affect the structures and functions of proteins and contribute to the development of diabetic complications. However, few studies have reported the relationship between AGEs and ELC.
View Article and Find Full Text PDFImpacts of Skin Color and Hypoxemia on Noninvasive Assessment of Peripheral Blood Oxygen Saturation: A Scoping Review.
Cureus
September 2023
Medical Education and Simulation, Cardiopulmonary Physiology, Nova Southeastern University Dr. Kiran C. Patel College of Allopathic Medicine, Fort Lauderdale, USA.
Standard pulse oximeters estimate arterial blood saturation (SaO) non-invasively by emitting and detecting light of a specific wavelength through a cutaneous vascular bed, such as a digit or the ear lobe. The quantity measured at these peripheral sites is designated as oxygen saturation (SpO). Most reliable pulse oximeters are calibrated from measurements of healthy volunteers using some form of oxygen desaturation method.
View Article and Find Full Text PDFVirtual reality simulation of panoramic radiographic anatomy for dental students.
J Dent Educ
August 2023
Department of Oral Medicine and Diagnostic Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
Purpose: This work aimed to utilize virtual reality (VR) in dental radiographic anatomical interpretation in junior dental students and test if it can enhance student learning, engagement, and performance.
Methods: VR software for panoramic anatomy was developed. Sixty-nine first-year dental students were divided into a control group (lecture-based) and an experimental group (VR) to learn panoramic radiographic anatomy.
Carotid Baroreceptor Magnetic Activation and Beat-to-Beat Blood Pressure Variability, Implications to Treat Abrupt Blood Pressure Elevation in Labile Hypertension.
Bioelectromagnetics
October 2022
Diabetology Clinic, Krompachy Hospital, Agel SK Inc., Krompachy, Slovakia.
Mounting evidence suggests enhanced blood pressure (BP) variability (BPV) independent role in cardiovascular (CV) damage. The goal was to estimate the effect of the carotid baroreceptor (CB) magnetic stimulation on sudden high BP elevation. Mean femoral arterial BP (MAP), heart rate (HR), baroreflex sensitivity (BRS), and ear lobe skin microcirculatory blood flow, by microphotoelectric plethysmography (MPPG), were simultaneously recorded in conscious rabbits sedated by pentobarbital intravenous (i.
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