Results 191 to 200 of about 919,980 (236)

Panoramic voltage‐sensitive optical mapping of contracting hearts using cooperative multiview motion tracking with 12 cameras

The Journal of Physiology, EarlyView.
Abstact figure legend A panoramic 3D optical mapping system was developed, enabling imaging of action potential waves across the entire strongly deforming ventricular surface of beating isolated hearts. The system comprises 12 high‐speed cameras and a soccerball‐shaped imaging chamber with 48 light‐emitting diodes (LEDs).
Shrey Chowdhary, Jan Lebert, Shai Dickman, Mason Manetta, Charles Gordon, Jan Christoph   +5 more
wiley   +1 more source

Multiscale mechanistic modelling of heterogeneity in cardiac sub‐cellular calcium handling accounting for variable t‐system density

The Journal of Physiology, EarlyView.
Abstract figure legend Illustration of spatial calcium dynamics (left panels) and the state cycle approximation (middle panel) that enables reduced simulation of spatially dependent dynamics without explicit description of space (right panels). The selected example here illustrates a spontaneous calcium wave, showing temporal snapshots of local calcium
Michael A Colman, Yohannes Shiferaw, David Conesa   +2 more
wiley   +1 more source

Improved Machine Learning Approach for Wavefront Sensing. [PDF]

Sensors (Basel), 2019
Guo H, Xu Y, Li Q, Du S, He D, Wang Q, Huang Y.   +6 more
europepmc   +1 more source

Comparative multimodal calibration of patient‐specific atrial fibrillation models: Impact of imaging and electrophysiology data on arrhythmogenic substrate identification

The Journal of Physiology, EarlyView.
Abstract figure legend Comparative multimodal calibration of patient‐specific left atrial (LA) models to identify arrhythmogenic substrates in atrial fibrillation (AF). A, LA models shown in posterior and anterior views, calibrated separately using: late gadolinium enhancement magnetic resonance imaging (LGE‐MRI) image intensity ratio (IIR; blue–red ...
Mahmoud Ehnesh, Haseeb Valli, Ovais A. Jaffery, Sam Coveney, Alexander Zolotarev, Zhong Chen, Wajid Hussain, David G. Jones, Raad Mohiaddin, Tom Wong, Gregory Slabaugh, Steven A. Niederer, Edward Vigmond, Shouvik Haldar, Caroline Roney   +14 more
wiley   +1 more source

Channelrhodopsin ion selectivity determines mechanisms and efficacy of optogenetic defibrillation in human atria and ventricles

The Journal of Physiology, EarlyView.
Abstract figure legend A, we used in silico models of human cardiomyocytes and microelectrode recordings on transgenic zebrafish hearts to study electrophysiology during optogenetic perturbations. Specifically, we compared effects of three distinct classes of channelrhodopsins: the cation non‐selective Chlamydomonas reinhardtii channelrhodopsin‐2 (ChR2)
Sophia Ohnemus, Albert Dasí, Ahmed F. Ramadan, Joachim Greiner, Eike M. Wülfers, Matthew R. Stoyek, Linda Tillert, Johannes Vierock, T. Alexander Quinn, Peter Kohl, Patrick M. Boyle, Viviane Timmermann, Franziska Schneider‐Warme   +12 more
wiley   +1 more source

Design Principles for Light‐Scattering Reservoir Computing at the Edge of Chaos

Advanced Computing, Volume 1, Issue 1, December 2026.
Here we realize a light‐scattering reservoir computer operating with measurement‐modulation feedback, physically tunable in three axes—reservoir dynamics, input‐reservoir coupling, and reservoir interconnectivity. Sweeping each axis, we locate the axis‐specific optimum of memory capacity; the dynamic axis displays the sharpest optimum.
Geon Kim, YongKeun Park
wiley   +1 more source

Science Needs for a Terrestrial Biosphere Tipping Point Early Warning System

Reviews of Geophysics, Volume 64, Issue 4, December 2026.
Abstract Tipping points in the Earth system have the potential to cause major detrimental impacts to the biosphere and societies. Their inherent nonlinearity implies that even relatively small additional increases in external forcing might result in disproportionately large adjustments to components of the Earth system.
Jesse F. Abrams, Chris Huntingford, Sergei Petrovskii, Joshua E. Buxton, Helen Millman, Chris A. Boulton, Robert J. Parker, Cristina Ruiz Villena, Andrew M. Cunliffe, Joseph Clarke, Valerio Lucarini, Darren Ghent, Peter M. Cox, Timothy M. Lenton   +13 more
wiley   +1 more source

Direct wavefront sensing enables functional imaging of infragranular axons and spines. [PDF]

Nat Methods, 2019
Liu R, Li Z, Marvin JS, Kleinfeld D.
europepmc   +1 more source

Interplay Between Deep Convection and Mesoscale Gravity Waves

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 21, 16 November 2026.
Abstract Although the association between precipitation and mesoscale gravity waves (MGWs) is well documented, the feedback mechanisms governing their amplification remain difficult to isolate. This study uses convection‐permitting numerical simulations with 1–4 km grid spacing to investigate a complex MGW event that occurred over the south‐central ...
Ananya Sen, Michael L. Kaplan, Rajan Bhandari   +2 more
wiley   +1 more source

Multitask Diffractive Deep Neural Networks Enabled by Joint Distance–Frequency Encoding

Nanophotonics, Volume 15, Issue 21, 12 November 2026.
A joint distance–frequency encoding strategy enables a single passive diffractive neural network to switch among four computational tasks. By combining mechanically tunable layer spacing with a dual‐frequency phase‐independent metasurface, the same hardware performs orbital angular momentum classification, direction recognition, logic operations, and ...
Zhengxuan Jiang, Zongmao Fei, Wen Jiang, Guowen Ding, Ke Chen, Yijun Feng   +5 more
wiley   +1 more source