Results 31 to 40 of about 1,274,311 (192)

What can a mean-field model tell us about the dynamics of the cortex? [PDF]

, 2010
In this chapter we examine the dynamical behavior of a spatially homogeneous two-dimensional model of the cortex that incorporates membrane potential, synaptic flux rates and long- and short-range synaptic input, in two spatial dimensions, using ...
Steyn-Ross, Moira L., Steyn-Ross, D. Alistair, Sleigh, James W., Gillies, Iain-Patrick, Wilson, Marcus T., Hailstone, David J.   +5 more
core   +1 more source

Closed-Loop Acoustic Stimulation During Sleep in Children With Epilepsy: A Hypothesis-Driven Novel Approach to Interact With Spike-Wave Activity and Pilot Data Assessing Feasibility

Frontiers in Human Neuroscience, 2019
Slow waves, the electroencephalographic (EEG) hallmark of deep sleep, can be systematically manipulated by acoustic stimulation: stimulation time-locked to the down phase of slow waves reduces, whereas stimulation time-locked to the up phase increases ...
Sara Fattinger, Sara Fattinger, Bigna Bölsterli Heinzle, Bigna Bölsterli Heinzle, Georgia Ramantani, Georgia Ramantani, Lucia Abela, Lucia Abela, Bernhard Schmitt, Bernhard Schmitt, Reto Huber, Reto Huber, Reto Huber   +12 more
doaj   +1 more source

Propagation of Compressional Alfvén Waves in a Magnetized Pair Plasma Medium

AIP Advances, 2022
The reductive perturbation approach was used to explore the nonlinear propagation of fast (compressive) and slow (rarefactive) electron–positron (EP) magnetoacoustic (EPMA) modes in an EP plasma medium. The solitary wave solution of the Korteweg-de Vries
T. I. Rajib, S. Sultana
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

FEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace, Alyssa Borges, Charles Arnaud, Tove Karlsson, Nina K. Bröker, Stefanie Barbirz, Marta Bally   +6 more
wiley   +1 more source

Large-scale cortical dynamics of sleep slow waves. [PDF]

PLoS ONE, 2012
Slow waves constitute the main signature of sleep in the electroencephalogram (EEG). They reflect alternating periods of neuronal hyperpolarization and depolarization in cortical networks.
Vicente Botella-Soler, Mario Valderrama, Benoît Crépon, Vincent Navarro, Michel Le Van Quyen   +4 more
doaj   +1 more source

An epithelial GPR35 isoform supports tumor‐associated transcriptional and metabolic phenotypes

FEBS Letters, EarlyView.
GPR35 generates two functionally distinct isoforms with previously unresolved roles. GPR35‐short mediates immune‐cell chemotaxis, while GPR35‐long is enriched in colorectal cancer epithelium, where it supports increased metabolism, proliferation, and tumor‐associated transcriptional programs.
Jørgen D. Rønneberg, Martine Hjeltnes, Josephine Krieger, Joshua E. Elias, Maria Stensland, Kristian Holm, Xiaojun Jiang, Chuki Khangsar, Tuula A. Nyman, Arthur Kaser, Johannes R. Hov, Tom H. Karlsen, Nicole C. Kaneider, Frode L. Jahnsen, Georg Schneditz   +14 more
wiley   +1 more source

Energy Transfer from Magnetohydrodynamic-scale Slow-mode Waves to Kinetic-scale Ion Acoustic Waves

The Astrophysical Journal Letters
Large-amplitude slow-mode waves are commonly observed near Earth’s magnetopause. Recent observations show that these waves can occur simultaneously with kinetic-scale ion acoustic waves (IAWs).
Xiaofei Shi, Xin An, Vassilis Angelopoulos   +2 more
doaj   +1 more source

Waveguided modes in a planar structure «graphene – thin semiconductor film – graphene» [PDF]

Компьютерная оптика, 2020
We investigated optical-range waveguide modes propagating in a semiconductor film sandwiched between two graphene plates. The mode characteristics were shown to depend on the chemical potential of graphene and the film thickness.
A.S. Abramov , D.A. Evseev, D.I. Sementsov   +2 more
doaj   +1 more source

On the Richtmyer-Meshkov Instability in Magnetohydrodynamics [PDF]

, 2005
The Richtmyer-Meshkov instability is important in a wide variety of applications including inertial confinement fusion and astrophysical phenomena. In some of these applications, the fluids involved may be plasmas and hence be affected by magnetic fields.
Wheatley, Vincent
core   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source