Results 91 to 100 of about 294,782 (382)
Electron-conformational transformations in nanoscopic RyR channels govern both the heart's contraction and beating [PDF]
, 2011 We show that a simple biophysically based electron-conformational model of RyR channel is able to explain and describe on equal footing the oscillatory regime of the heart's cell release unit both in sinoatrial node (pacemaker) cells under normal ...
Markhasin, V. S. +3 more
core +3 more sources
Induced Pluripotent Stem Cell–Derived Cardiomyocytes Provide In Vivo Biological Pacemaker Function
Circulation: Arrhythmia and Electrophysiology, 2017 Background— Although multiple approaches have been used to create biological pacemakers in animal models, induced pluripotent stem cell–derived cardiomyocytes (iPSC-CMs) have not been investigated for this purpose.
S. Chauveau +14 more
semanticscholar +1 more source
Advanced Materials Technologies, EarlyView.This review traces the evolution of wireless power transfer (WPT) for implantable medical devices, spanning electromagnetic, magnetoelectric, acoustic, and magneto‐dynamic systems. Quantitative comparisons of power, distance, and device scale highlight trade‐offs across modalities, while emerging hybrid mechanisms reveal strategies to overcome ...
Junyeop Kim, Yoonseok Park
wiley +1 more source
The Pan African Medical Journal, 2013 INTRODUCTION: Permanent pacemaker implantation is available in Nigeria. There is however no national registry or framework for pacemaker data collection.
Bode Falase +5 more
doaj +1 more source
Stimulus Repetition and the Perception of Time: The Effects of Prior Exposure on Temporal Discrimination, Judgment, and Production [PDF]
, 2011 It has been suggested that repeated stimuli have shorter subjective duration than novel items, perhaps because of a reduction in the neural response to repeated presentations of the same object.
Matthews, William J
core +4 more sources
Journal of Neuroscience, 1995 The role of the endogenous circadian pacemaker in the timing of the sleep-wake cycle and the regulation of the internal structure of sleep, including REM sleep, EEG slow-wave (0.75–4.5 Hz) and sleep spindle activity (12.75–15.0 Hz) was investigated ...
D.-J. Dijk, C. Czeisler
semanticscholar +1 more source
Advanced Materials Technologies, EarlyView.Combined approach of electromagnetic (Power) and ultrasound (data harvesting) waves is proposed to address the miniaturized ultrasonic implants. Electromagnetic waves trigger the piezoelectric element to generate the acoustic pulse which is modulated by the variations in the sensor's impedance.
Anam Bhatti +6 more
wiley +1 more source
Pacemaker Prevention Therapy in Drug–refractory Paroxysmal Atrial Fibrillation: Reliability of Diagnostics and Effectiveness of Prevention Pacing Therapy in Vitatron™ Selection® device [PDF]
, 2006 Introduction. Atrial fibrillation (AF), the most common and rising disorder of cardiac rhythm, is quite difficult to control and/or to treat. Non pharmacological therapies for AF may involve the use of dedicated pacing algorithms to detect and prevent ...
Dell’Orto, Simonetta +4 more
core +2 more sources
Reducing Personalization Time and Energy Cost While Walking Outdoors with a Portable Exosuit
Advanced Robotics Research, EarlyView.Rapid Real‐World Optimization! An AF‐based human‐in‐the‐loop optimization strategy rapidly personalizes a portable hip extension exosuit for incline walking. Real‐time Bayesian optimization of assistive force significantly reduces metabolic energy—up to 16.2%—while converging in just 3 min 24 s.
Kimoon Nam +7 more
wiley +1 more source
Subacute Right Ventricle Perforation by Pacemaker Lead Presenting with Left Hemothorax and Shock
Case Reports in Cardiology, 2015 Cardiac perforation by pacemaker is a rare but potentially fatal complication. Acute perforations occurring within twenty-four hours of insertion of pacemaker can lead to hemopericardium, cardiac tamponade, and death.
Julianne Nichols +3 more
doaj +1 more source