Results 51 to 60 of about 746,949 (188)

Dendritic branch structure compartmentalizes voltage-dependent calcium influx in cortical layer 2/3 pyramidal cells

open access: yeseLife, 2022
Back-propagating action potentials (bAPs) regulate synaptic plasticity by evoking voltage-dependent calcium influx throughout dendrites. Attenuation of bAP amplitude in distal dendritic compartments alters plasticity in a location-specific manner by ...
Andrew T Landau   +5 more
doaj   +1 more source

Regulation of Dendritic Protein Synthesis by Miniature Synaptic Events [PDF]

open access: yes, 2004
We examined dendritic protein synthesis after a prolonged blockade of action potentials alone and after a blockade of both action potentials and miniature excitatory synaptic events (minis). Relative to controls, dendrites exposed to a prolonged blockade
Aakalu, Girish N.   +3 more
core   +1 more source

SU_q(n) Gauge Theory [PDF]

open access: yes, 1996
A field theory with local transformations belonging to the quantum group SU_q(n) is defined on a classical spacetime, with gauge potentials belonging to a quantum Lie algebra.
Anthony Sudbery   +15 more
core   +2 more sources

Field theoretical approach to non-local interactions: 1d electrons and fermionic impurities [PDF]

open access: yes, 1996
We apply a recently proposed path-integral approach to non-local bosonization to a Thirring-like system modeling non-relativistic massless particles interacting with localized fermionic impurities.
Andrei   +33 more
core   +2 more sources

Genetically Encoded Voltage Indicators Are Illuminating Subcellular Physiology of the Axon

open access: yesFrontiers in Cellular Neuroscience, 2019
Everything we see and do is regulated by electrical signals in our nerves and muscle. Ion channels are crucial for sensing and generating electrical signals.
Lauren C. Panzera, Michael B. Hoppa
doaj   +1 more source

ActionPytential: An open source tool for analyzing and visualizing cardiac action potential data

open access: yesHeliyon, 2023
The action potential forms the basis of cardiac pacemaking, conduction, and contraction. Action potentials can be recorded from numerous preparation types, including ventricular or atrial trabecules, Purkinje fibers, isolated cardiac myocytes.
Tamás Árpádffy-Lovas, Norbert Nagy
doaj   +1 more source

Noncommutative fluid dynamics in the K\"{a}hler parametrization

open access: yes, 2011
In this paper, we propose a first order action functional for a large class of systems that generalize the relativistic perfect fluids in the K\"{a}hler parametrization to noncommutative spacetimes.
A. Connes   +6 more
core   +1 more source

General Solutions for Tunneling of Scalar Fields with Quartic Potentials

open access: yes, 1993
For the theory of a single scalar field $\varphi$ with a quartic potential $V(\varphi)$, we find semi-analytic expressions for the Euclidean action in both four and three dimensions.
A. D. Dolgov   +32 more
core   +1 more source

Post-inflationary phases stiffer than radiation and Palatini formulation

open access: yes, 2019
If the inflaton and the quintessence fields are identified, the background geometry evolves through a stiff epoch undershooting the expansion rate of a radiation-dominated plasma.
Giovannini, Massimo
core   +1 more source

Excitatory postsynaptic potentials in rat neocortical neurons in vitro. III. Effects of a quinoxalinedione non-NMDA receptor antagonist [PDF]

open access: yes, 1990
1. Intracellular microelectrodes were used to obtain recordings from neurons in layer II/III of rat frontal cortex. A bipolar electrode positioned in layer IV of the neocortex was used to evoke postsynaptic potentials.
Hablitz, John H., Sutor, Bernd
core   +1 more source

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