Results 121 to 130 of about 15,224 (255)

Does human evolution in different latitudes influence susceptibility to obesity via the circadian pacemaker?

, 2012
The variable photoperiods of Northern latitudes challenge the entrainment capacity of the circadian pacemaker, which evolved under constant photoperiods in Equatorial regions.
Wyse, C.A.
core   +1 more source

Sustainable Low‐Field Cardiovascular Magnetic Resonance in Changing Healthcare Systems—An Update

NMR in Biomedicine, Volume 39, Issue 7, July 2026.
Low‐field cardiovascular MRI offers a cost‐effective and accessible alternative to conventional high‐field systems. Recent technological advances have improved image quality, safety, and device compatibility, expanding its clinical applications. These developments position low‐field CMR as a scalable solution to improve global cardiovascular imaging ...
Muhammad Umair, Ahmed Marey, Sanjana Murali, Udunna C. Anazodo, Adrienne E. Campbell‐Washburn, Ntobeko A. B. Ntusi, Orlando P. Simonetti, Thoralf Niendorf, Regina Mammen, Sola Adeleke   +9 more
wiley   +1 more source

Adenylate-cyclase VI transforms ventricular cardiomyocytes into biological pacemaker cells

, 2010
When sinus node or atrioventricular (AV) node cells are damaged by disease, the implantation of an artificial cardiac pacemaker becomes necessary. In search for a biological alternative, the objective of this study was to demonstrate whether in vivo ...
Bara, Christoph, Ghodsizad, Ali, Kallenbach, Klaus, Klein, Gunnar, Ruhparwar, Arjang, Karck, Matthias, Sigg, Daniel C, Niehaus, Michael, Haverich, Axel   +8 more
core   +1 more source

Soft Ionic and Electronic Triboelectric Nanogenerators: Toward Attachable and Implantable Biomedical Applications

Advanced Materials, Volume 38, Issue 32, 8 June 2026.
This review provides an overview of triboelectric nanogenerator (TENG)–based biomedical applications by classifying studies into electronic and ionic systems across attachable and implantable platforms. It summarizes key material choices, device structures, and working mechanisms that characterize current TENG‐based research, and outlines six future ...
Kyongtae Choi, Jimin Park, Won Jun Song, Soohwan An, Seonggyu Choe, Byeong‐Rak Keum, Min Young Kim, Dae Hee Hwang, Young‐Geun Park, Sung‐Won Kim, Sangyul Baik, Gwang‐Bum Im, Younghoon Lee   +12 more
wiley   +1 more source

Survey of ST-Segment Changes due to Active Lead Fixation during Permanent Pacemaker Device Implantation as a Prognostic Indicator of its Performance

مجله دانشکده پزشکی اصفهان, 2017
Background: Active lead implantation can create injury in myocardium that may be associated with a ST-segment elevation. This ST-segment elevation may be correlated with changes in other parameters such as threshold, sense, amplitude, impedance, and ...
Sima Sayah, Farzad Pourkalbasi-Esfahani, Erfan Torabi   +2 more
doaj  

Post-Implant Global Longitudinal Strain as a Predictor of Pacing-Induced Cardiomyopathy in Patients with Preserved Ejection Fraction Undergoing Pacemaker Placement

Reviews in Cardiovascular Medicine
Background: Right ventricular (RV) pacing exacerbates heart failure and increases cardiac mortality in patients with reduced ejection fraction (EF).
Sung Soo Kim, Hyung Wook Park, Hyung Ki Jeong   +2 more
doaj   +1 more source

Conformable Microelectrode Arrays Integrated with a Scoop‐Shaped Slide‐Well for Dynamic Electrophysiological Profiling of Patient‐Derived Cardiac Organoids

Advanced Science, Volume 13, Issue 31, 4 June 2026.
A flexible, ultrathin multi‐channel microelectrode array (MEA) conformally integrated onto a curved slide‐well enables stable electrical interfacing with 3D cardiac organoids. The geometry‐guided self‐alignment allows simultaneous recording of extracellular field potentials and contractile motion from irregular, beating tissues.
Ye Seul Kim, Jeonghwa Jeong, Gyeonghwa Heo, Young Woo Kwon, Jeongha Lee, Yoon Ji Jeong, Gyu Tae Park, Seongdo Jeong, Ki Won Hwang, Murim Choi, Jinhong Shin, Suck Won Hong, Jae Ho Kim   +12 more
wiley   +1 more source

Acoustic Impedance‐Tailored High‐Performance Ultrasound‐Driven Triboelectric Nanogenerators

Advanced Energy Materials, Volume 16, Issue 21, 3 June 2026.
An acoustic impedance–mismatched triboelectric nanogenerator is presented for efficient ultrasound energy harvesting in implantable medical devices. Concave and convex membrane patterning induces controlled acoustic impedance mismatch, which boosts output by ∼200% and ensures stable operation over 100 million cycles and six weeks in vivo, highlighting ...
Young‐Jun Kim, Youngwook Chung, Joon‐Ha Hwang, Jang‐Mook Jeong, Bosung Kim, Donghyun Kang, Byung‐Ok Choi, Hong‐Joon Yoon, Sang‐Woo Kim   +8 more
wiley   +1 more source

Design of Cardiac Pacemaker Controller Based on Reinforcement Learning

BBAP.2024.011This study investigates the derivation of PID controller parameters, commonly used for pacemaker control, using both genetic algorithm (GA) and reinforcement learning (RL) methods.
Orbay, Kağan, Demir, Murat, Sagbas, Mehmet   +2 more
core  

Membrane resonance in bursting pacemaker neurons of an oscillatory network is correlated with network frequency

, 2009
Network oscillations typically span a limited range of frequency. In pacemaker-driven networks, including many central pattern generators (CPGs), this frequency range is determined by the properties of bursting pacemaker neurons and their synaptic ...
Nadim, Farzan, Tohidi, Vahid
core   +1 more source