Results 171 to 180 of about 30,710 (266)

Longer action potential duration in the Purkinje network than in the ventricular myocardium delays retrograde activation of the human His‐Purkinje system

The Journal of Physiology, EarlyView.
Abstract figure legend Activation time (AT) maps from right ventricular apical pacing in a human ventricles model with longer action potential duration in the His‐Purkinje system (HPS) than in the myocardium (MYO). For pacing with a long S1S2 coupling interval (CI), the AT from the myocardial pacing site to the first AT of the HPS (ATMYO) is longer ...
Jason D. Bayer, Edward J. Vigmond, Ruben Coronel, Chantal E. Conrath   +3 more
wiley   +1 more source

The ultrarapid delayed rectifier potassium current has important functional role in the repolarization reserve of canine and human ventricular muscle

The Journal of Physiology, EarlyView.
Abstract figure legend The ultrarapid delayed rectifier potassium current (IKur) has long been considered an atrial‐specific current with no functional role in the ventricles, despite evidence of its expression in ventricular myocytes. In the present study we challenged this prevailing concept and investigated the potential role of IKur in ventricular ...
Alaa Amin E. Abdelmagid, Aiman Saleh A. Mohammed, Gábor Mohácsi, Benjámin Paskuj, Gergő Bitay, Jakub Tomek, Sahil Dalal, Tamás Árpádffy‐Lovas, Vivien Demeter‐Haludka, István Koncz, Muhammad Naveed, László Virág, Norbert Nagy, András Varró, István Baczkó, Norbert Jost, Zsófia Kohajda, Leila Topal   +17 more
wiley   +1 more source

Development of a High-Sensitivity Electrochemical Immunoassay Using a Fully 3D-Printed Electrocatalytic Microelectrode Probe Platform. [PDF]

Anal Chem
Docherty N, Miller CL, Dobrea A, Macdonald D, Gordon A, Pang S, Fu Y, Jimenez M, Corrigan DK, Patel BA.   +9 more
europepmc   +1 more source

Intrinsic pH chemosensitivity of acutely dissociated medullary serotonergic and retrotrapezoid neurones

The Journal of Physiology, EarlyView.
Abstract figure legend Central respiratory chemoreceptors (CRCs) are critical for maintaining normal systemic levels of pH and PCO2. A CRC must respond to pH via intrinsic mechanisms. Here we quantified intrinsic chemosensitivity of medullary 5‐HT neurones and retrotrapezoid nucleus (RTN) neurones using acute dissociation.
Yuanming Wu, Eduardo Bravo, George Bradley Richerson   +2 more
wiley   +1 more source

Nanophotonic neural probes for in vivo photostimulation, electrophysiology, and microfluidic delivery. [PDF]

Microsyst Nanoeng
Mu X, Chameh HM, Movahed M, Chen F, Straguzzi JN, Kumar P, Stalmashonak A, Wahn H, Chua H, Luo X, Lo GQ, Poon JKS, Valiante TA, Sacher WD.   +13 more
europepmc   +1 more source

Microtube-integrated chips for modular electrical stimulation and 3D confined neural network growth. [PDF]

Microsyst Nanoeng
Qiu Y, Wang X, Yu H, Zheng J, Wang J, Liu L, Li WJ.   +6 more
europepmc   +1 more source

Bridging the Gap: Integrated High-Density Microelectrode Arrays for Cellular, Organoid, and Clinical Electrophysiology. [PDF]

Micromachines (Basel)
Wu Q, Gong Y, Liu X.
europepmc   +1 more source

Dorso‐Ventral and Night‐Day Regulation of Extracellular K+ Dynamics in Mouse Hippocampal Astrocytes

Glia, Volume 74, Issue 9, September 2026.
Hippocampal astrocytic K+ buffering varies by region and time. Ventral astrocytes show faster K+ accumulation due to reduced Kir4.1 function. Such regional divergence is modulated by circadian shifts in Kir4.1 and gap junction coupling. ABSTRACT Astrocytes regulate extracellular potassium (K+) through multiple mechanisms operating across distinct ...
Nariman Kiani, Kabeer Abubakar, Tin Luka Petanjek, Monique Esclapez, Anton Ivanov, Christophe Bernard   +5 more
wiley   +1 more source

Enhancing the sensitivity of gamma-aminobutyric acid and glutamate biosensors by electrochemically roughening platinum microelectrodes. [PDF]

Front Neurosci
Adediji MY, Billa S, Siddiqui S, Arumugam PU.   +3 more
europepmc   +1 more source

Electrically Driven Hydrogel Actuators From Turgor Pressure to Ciliary Motion

SmartSys, Volume 2, Issue 3, September 2026.
ABSTRACT Electrically driven hydrogels convert ion migration, water transport, and polymer network deformation into mechanical outputs, offering a soft and responsive platform for actuation. Recent progress in this field has advanced from macroscopic electroosmotic turgor actuators to micrometer‐scale hydrogel cilia arrays.
Ning Li, Chenhui Bai, Xinru Yang, Xiumin Sun, Suyi Wen, Xiaojing Cui, Hulin Zhang   +6 more
wiley   +1 more source