Buscar
Mostrando ítems 31-40 de 170
Photoelectron emission from metal surfaces by ultrashort laser pulses
(American Physical Society, 2006-12)
Electron emission from metal surfaces produced by short laser pulses is studied within the framework of the distorted-wave formulation. The proposed approach, named surface-Volkov (SV)approximation, makes use of the ...
Hierarchy of Floquet gaps and edge states for driven honeycomb lattices
(American Physical Society, 2015-04-20)
Electromagnetic driving in a honeycomb lattice can induce gaps and topological edge states with a structure of increasing complexity as the frequency of the driving lowers. While the high frequency case is the most simple ...
HATS: A Ground-Based Telescope to Explore the THz Domain
(Springer, 2020-04)
The almost unexplored frequency window from submillimeter to mid-infrared (mid-IR) may bring new clues about the particle acceleration and transport processes and the atmospheric thermal response during solar flares. Because ...
Information-theoretical analysis of resting state EEG microstate sequences - non-Markovianity, non-stationarity and periodicities
(Elsevier, 2017-09)
We present an information-theoretical analysis of temporal dependencies in EEG microstate sequences during wakeful rest. We interpret microstate sequences as discrete stochastic processes where each state corresponds to a ...
Bifurcation structure determines different phase-amplitude coupling patterns in the activity of biologically plausible neural networks
(Academic Press Inc Elsevier Science, 2019-11-15)
Phase-amplitude cross frequency coupling (PAC) is a rather ubiquitous phenomenon that has been observed in a variety of physical domains; however, the mechanisms underlying the emergence of PAC and its functional significance ...
Two types of ictal phase-amplitude couplings in epilepsy patients revealed by spectral harmonicity of intracerebral EEG recordings
(Elsevier Ireland, 2020-08)
Objective: Spectral harmonicity of the ictal activity was analyzed regarding two clinically relevant aspects, (1) as a confounding factor producing ‘spurious’ phase-amplitude couplings (PAC) which may lead to wrong conclusions ...
Reading Shakespearean tropes in a foreign tongue: Age of L2 acquisition modulates neural responses to functional shifts
(Pergamon-Elsevier Science Ltd, 2019-02)
Functional shifts (FSs) – morphosyntactically marked words evoking coherent but novel meanings – are ubiquitous in English and, specially, in Shakespearean literature. While their neural signatures have been explored in ...
Intracranial high-γ connectivity distinguishes wakefulness from sleep
(Academic Press Inc., 2018-04)
Neural synchrony in the γ-band is considered a fundamental process in cortical computation and communication and it has also been proposed as a crucial correlate of consciousness. However, the latter claim remains inconclusive, ...
Light generation at the anomalous dispersion high energy range of a nonlinear opal film
(Optical Society of America, 2009-12)
We study experimentally and theoretically light propagation and generation at the high energy range of a close-packed fcc photonic crystal of polystyrene spheres coated with a nonlinear material. We observe an enhancement ...
Spectral signatures of serotonergic psychedelics and glutamatergic dissociatives
(Elsevier, 2019-10-15)
Classic serotonergic psychedelics are remarkable for their capacity to induce reversible alterations in consciousness of the self and the surroundings, mediated by agonism at serotonin 5-HT2A receptors. The subjective ...