Results 31 to 40 of about 48,382 (317)
Reentry: A Key Mechanism for Integration of Brain Function
Reentry in nervous systems is the ongoing bidirectional exchange of signals along reciprocal axonal fibers linking two or more brain areas. The hypothesis that reentrant signaling serves as a general mechanism to couple the functioning of multiple areas ...
Gerald M Edelman, Joseph A. Gally
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Arrhythmia mechanism dependent pulmonary vein ablation in paroxysmal atrial fibrillation
Atrial fibrillation (AF) often requires invasive treatment by ablation to decrease symptom burden. The pulmonary veins (PV) are thought to trigger paroxysms of AF, and ablative PV isolation (PVI) is a cornerstone in AF treatment. However, incomplete PVI,
Lisa A. Gottlieb+6 more
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Effects of Reentry Plasma Sheath on GPS Patch Antenna Polarization Property
A plasma sheath enveloping a reentry vehicle would affect performances of on-board antenna greatly, especially the navigation antennas. This paper studies the effects of reentry plasma sheath on a GPS right-hand circularly polarized (RHCP) patch antenna ...
L. Zhao, B. W. Bai, W. M. Bao, X. P. Li
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Mystery and contingency in correctional education
Citing the work of Maxine Greene, Maurice Merleau-Ponty, and Thom Gehring, this paper makes the argument that correctional educators should attempt to accept that they will never fully understand the lives and perspectives of their students.
G. Walker
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Rotor Drivers in Induction and Maintenance of Atrial Fibrillation
Atrial fibrillation is the most common arrhythmia in clinical practice. It is associated with an increased risk of stroke, chronic heart failure, and sudden cardiac death.
A. A. Kulikov+5 more
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Termination of Reentry in an Inhomogeneous Ring of Model Cardiac Cells [PDF]
Reentrant waves propagating in a ring or annulus of excitable media model is the basic mechanism underlying a major class of irregular cardiac rhythms known as anatomical reentry. Such reentrant waves are terminated by rapid electrical stimulation (pacing) from an implantable device.
arxiv +1 more source
RATIONALE Embryonic heart is characterized of rapidly dividing cardiomyocytes required to build a working myocardium. Cardiomyocytes retain some proliferative capacity in the neonates but lose it in adulthood.
A. Borden+12 more
semanticscholar +1 more source
Abstract Introduction The posterior wall (PW) has been proposed as a standard target for ablation beyond pulmonary vein antral isolation (PVI) in patients with persistent atrial fibrillation (AF). However, studies have shown inconsistent outcomes with the addition of PW ablation.
Michael J. Cutler+5 more
wiley +1 more source
Modeling the Heart as a Communication System [PDF]
Electrical communication between cardiomyocytes can be perturbed during arrhythmia, but these perturbations are not captured by conventional electrocardiographic metrics. We developed a theoretical framework to quantify electrical communication using information theory metrics in 2-dimensional cell lattice models of cardiac excitation propagation.
arxiv +1 more source
A phenomenological study of employer perspectives on hiring ex- offenders
Several researchers established a direct relationship between recidivism and ex-offenders’ unemployment. While the consequences of ex-offender unemployment to society are known, the lived experiences of employers or business owners making employment ...
Oluwasegun Obatusin+1 more
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