Results 101 to 110 of about 290,996 (382)

Contribution of the circadian pacemaker and the sleep homeostat to sleep propensity, sleep structure, electroencephalographic slow waves, and sleep spindle activity in humans

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

Toward Wireless Implantable Robotic Systems Driven by Magnetic Field for Personalized Therapy

Advanced Robotics Research, EarlyView.
Robotic materials are playing an increasingly vital role in enabling sensing and actuation at small scales. This perspective highlights recent advances in magnetic materials and magnetically actuated devices for wireless sensing, actuation, and energy harvesting toward implantable robotic systems for closed‐loop therapy.
Yusheng Wang, Ruijian Ge, Xiaoguang Dong
wiley   +1 more source

Anesthetic considerations and successful management of a patient with permanent pacemaker for cervical spine instrumentation

Saudi Journal of Anaesthesia, 2018
Patients with permanent pacemaker posted for cervical spine instrumentation pose special challenges for modern-day anesthesiologist since the field of surgery is in proximity to the pacing apparatus.
Vattipalli Sameera, Mihir P Pandia, Barkha Bindu, Keshav Goyal   +3 more
doaj   +1 more source

302 Impact of right ventricular pacing in patients with TAVI underwent permanent pacemaker implantation: the Pace-TAVI International Multicentre Study [PDF]

, 2021
Francesco Bruno, Fabrizio D ́ascenzo, Isabel Muñoz‐Pousa, Francesco Saia, Matteo Pio Vaira, Enrico Baldi, Pier Pasquale Leone, Pilar Cabanas‐Grandío, Nicola Corcione, Enrico Guido Spinoni, Gianmarco Annibali, Caterina Russo, Matteo Ziacchi, C Caruzzo, Marco Ferlini, Giuseppe Lanzillo, Ovidio De Filippo, Guglielmo Gallone, Davide Castagno, Giuseppe Patti, Giuseppe Musumeci, Arturo Giordano, Giulio Stefanini, Stefano Salizzoni, Roberto Rordorf, Emad Abu Essi, Sergio Raposeiras Rubin, Mauro Biffi, Federico De Marco, Gaetano Maria De Ferrari   +29 more
openalex   +1 more source

On the Evolution of the Cardiac Pacemaker

Journal of Cardiovascular Development and Disease, 2017
The rhythmic contraction of the heart is initiated and controlled by an intrinsic pacemaker system. Cardiac contractions commence at very early embryonic stages and coordination remains crucial for survival.
S. Burkhard, Vincent W. W. van Eif, Laurence Garric, V. Christoffels, J. Bakkers   +4 more
semanticscholar   +1 more source

Wearable and Implantable Devices for Continuous Monitoring of Muscle Physiological Activity: A Review

Advanced Science, EarlyView.
Recent advances in materials and device engineering enable continuous, real‐time monitoring of muscle activity via wearable and implantable systems. This review critically summarizes emerging technologies for tracking electrophysiological, biomechanical, and oxygenation signals, outlines fundamental principles, and highlights key challenges and ...
Zhengwei Liao, Ata Golparvar, Mohammad Javad Bathaei, Filipe Arroyo Cardoso, Clementine M. Boutry   +4 more
wiley   +1 more source

Hesperidin depolarizes the pacemaker potentials through 5-HT4 receptor in murine small intestinal interstitial cells of Cajal

Animal Cells and Systems, 2020
Hesperidin, a citrus flavonoid, can exert numerous beneficial effects on human health. Interstitial cells of Cajal (ICC) are pacemaker cells in the gastrointestinal (GI) tract.
Minwoo Hwang, Jeong Nam Kim, Byung Joo Kim   +2 more
doaj   +1 more source

The neurochemical basis of photic entrainment of the circadian pacemaker [PDF]

Circadian rhythmicity in mammals is controlled by the action of a light-entrainable hypothalamus, in association with two cell clusters known as the supra chiasmatic nuclei (SCN).
Buckley, Becky, Lutton, Lewis M., Rea, Michael A.   +2 more
core   +1 more source

Calcium puffs are generic InsP₃-activated elementary calcium signals and are downregulated by prolonged hormonal stimulation to inhibit cellular calcium responses [PDF]

, 2001
Elementary Ca2+ signals, such as "Ca2+ puffs", which arise from the activation of inositol 1,4,5-trisphosphate receptors, are building blocks for local and global Ca2+ signalling.
Berridge, Michael J., Bootman, Martin D., De Smedt, Humbert, de Smet, Patrick, Holmes, Andrew, Lipp, Peter, Missiaen, Ludwig, Parys, Jan B., Thomas, David, Thuring, Jan, Tovey, Stephen C., Young, Kenneth W.   +11 more
core  

Distributed Real-Time Emulation of Formally-Defined Patterns for Safe Medical Device Control

, 2010
Safety of medical devices and of their interoperation is an unresolved issue causing severe and sometimes deadly accidents for patients with shocking frequency.
José Meseguer, Mu Sun, Peter Csaba Ölveczky   +2 more
core   +2 more sources