Results 51 to 60 of about 805,319 (253)

High-Momenta Estimates for the Klein-Gordon Equation: Long-Range Magnetic Potentials and Time-Dependent Inverse Scattering [PDF]

open access: yesJ. Phys. A: Math. Theor. vol. 49 (2016) 155302, 26 pp, 2015
The study of obstacle scattering for the Klein-Gordon equation in the presence of long-range magnetic potentials is addressed. Previous results of the authors are extended to the long-range case and the results the authors previously proved for high-momenta long-range scattering for the Schr\"odinger equation are brought to the relativistic scenario ...
arxiv   +1 more source

5-HT6 Receptors Sex-Dependently Modulate Hippocampal Synaptic Activity through GABA Inhibition

open access: yesBiomolecules, 2023
The subtype 6 of the serotoninergic receptors (5-HT6Rs) is highly expressed in the hippocampus, and evidence indicates the beneficial effects of 5-HT6Rs blockade on short- and long-term memory in rodents.
Caroline Lahogue   +3 more
doaj   +1 more source

Locus Coeruleus Optogenetic Light Activation Induces Long-Term Potentiation of Perforant Path Population Spike Amplitude in Rat Dentate Gyrus

open access: yesFrontiers in Systems Neuroscience, 2019
Norepinephrine (NE) in dentate gyrus (DG) produces NE-dependent long-term potentiation (NE-LTP) of the perforant path-evoked potential population spike both in vitro and in vivo. Chemical activators infused near locus coeruleus (LC), the source of DG NE,
Meghan A. L. Quinlan   +5 more
doaj   +1 more source

Maternal Hyperhomocysteinemia Produces Memory Deficits Associated with Impairment of Long-Term Synaptic Plasticity in Young Rats

open access: yesCells, 2022
Maternal hyperhomocysteinemia (HCY) is a common pregnancy complication caused by high levels of the homocysteine in maternal and fetal blood, which leads to the alterations of the cognitive functions, including learning and memory.
Tatyana Y. Postnikova   +9 more
doaj   +1 more source

Mechanism of TrkB-Mediated Hippocampal Long-Term Potentiation [PDF]

open access: yes, 2004
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Bonhoeffer, Tobias   +5 more
core   +1 more source

Spectropolarimetry of massive stars: Requirements and potential from today to 2030 [PDF]

open access: yes, 2014
We develop the requirements and potential of spectropolarimetry as applied to understanding the physics of massive stars during the immediate, intermediate-term and long-term future.
arxiv   +1 more source

Numerical modelling of plasticity induced by transcranial magnetic stimulation [PDF]

open access: yes, 2013
We use neural field theory and spike-timing dependent plasticity to make a simple but biophysically reasonable model of long-term plasticity changes in the cortex due to transcranial magnetic stimulation (TMS).
Brownjohn, P.W.   +4 more
core   +2 more sources

How long will long-term potentiation last? [PDF]

open access: yesPhilosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 2003
Abstract The paramount feature of long-term potentiation (LTP) as a memory mechanism is its characteristic persistence over time. Although the basic phenomenology of LTP persistence was established 30 years ago, new insights have emerged recently about the extent of LTP persistence and its regulation by activity and experience. It is now
openaire   +3 more sources

Long-term behaviour of Hertzian chains between fixed walls is really equilibrium [PDF]

open access: yes, 2017
We examine the long-term behaviour of non-integrable, energy-conserved, 1D systems of macroscopic grains interacting via a contact-only generalized Hertz potential and held between stationary walls. Existing dynamical studies showed the absence of energy equipartitioning in such systems, hence their long-term dynamics was described as quasi-equilibrium.
arxiv   +1 more source

Vitamin D Alterations in Food Regimens and Synaptic Transmission in Neuronal Circuit

open access: yesMajallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Qum, 2012
Background and Objectives: In nervous system, through specific channels and some ionotropic receptors, calcium ion involves in synaptic transmission vitamin D takes an important role in cellular regulation as well.
M Taghizadeh   +6 more
doaj   +2 more sources

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