Results 51 to 60 of about 81,695 (282)

CMB and BAO constraints for an induced gravity dark energy model with a quartic potential [PDF]

, 2015
We study the predictions for structure formation in an induced gravity dark energy model with a quartic potential. By developing a dedicated Einstein-Boltzmann code, we study self-consistently the dynamics of homogeneous cosmology and of linear ...
Ballardini, Mario, Finelli, Fabio, Paoletti, Daniela, Umiltà, Caterina   +3 more
core   +4 more sources

Ketamine Modulates Theta and Gamma Oscillations

Journal of Cognitive Neuroscience, 2010
Abstract Ketamine, an N-methyl-d-aspartate (NMDA) receptor glutamatergic antagonist, has been studied as a model of schizophrenia when applied in subanesthetic doses. In EEG studies, ketamine affects sensory gating and alters the oscillatory characteristics of neuronal signals in a complex manner.
Maciej T. Lazarewicz, Richard S. Ehrlichman, Christina R. Maxwell, Michael J. Gandal, Leif H. Finkel, Steven J. Siegel   +5 more
openaire   +4 more sources

Firing rate models for gamma oscillations [PDF]

Journal of Neurophysiology, 2019
Gamma oscillations are readily observed in a variety of brain regions during both waking and sleeping states. Computational models of gamma oscillations typically involve simulations of large networks of synaptically coupled spiking units. These networks can exhibit strongly synchronized gamma behavior, whereby neurons fire in near synchrony on every ...
Stephen, Keeley, Áine, Byrne, André, Fenton, John, Rinzel   +3 more
openaire   +2 more sources

Cortical volume and 40-Hz auditory-steady-state responses in patients with schizophrenia and healthy controls

NeuroImage: Clinical, 2019
Background: Abnormalities in the 40-Hz auditory steady-state response (ASSR) of the gamma range have been reported in schizophrenia (SZ) and are regarded as important pathophysiological features.
Sungkean Kim, Seon-Kyeong Jang, Do-Won Kim, Miseon Shim, Yong-Wook Kim, Chang-Hwan Im, Seung-Hwan Lee   +6 more
doaj   +1 more source

Searching for spectral oscillations due to photon-axionlike particle conversion using the Fermi-LAT observations of bright supernova remnants

, 2018
Axionlike-particles (ALPs) are one promising type of dark matter candidate particle that may generate detectable effects on $\gamma$-ray spectra other than the canonical weakly interacting massive particles.
Fan, Yi-Zhong, Feng, Lei, Liang, Yun-Feng, Wu, Jian, Xia, Zi-Qing, Yuan, Qiang, Zhang, Cun   +6 more
core   +1 more source

Synaptic plasticity controls sensory responses through frequency-dependent gamma oscillation resonance. [PDF]

PLoS Computational Biology, 2010
Synchronized gamma frequency oscillations in neural networks are thought to be important to sensory information processing, and their effects have been intensively studied.
Se-Bum Paik, Donald A Glaser
doaj   +1 more source

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

Molecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source

Integral criteria for second-order linear oscillation

Electronic Journal of Qualitative Theory of Differential Equations, 2006
We present several new criteria for the oscillation of the second-order linear equation $ y''(t)+q(t)y(t)=0 $, in which the coefficient $ q $ may or may not change signs. The criteria involve the integral $ \int t^\gamma q(t)\, dt $ for some $ \gamma >0
Man Kam Kwong
doaj   +1 more source

Intrinsic Cornu Ammonis Area 1 Theta-Nested Gamma Oscillations Induced by Optogenetic Theta Frequency Stimulation. [PDF]

, 2016
UNLABELLED: Gamma oscillations (30-120 Hz) are thought to be important for various cognitive functions, including perception and working memory, and disruption of these oscillations has been implicated in brain disorders, such as schizophrenia and ...
Butler, James L, Mendonça, Philipe RF, Paulsen, Ole, Robinson, Hugh PC   +3 more
core   +2 more sources

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

International Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg, Paulo Jefferson Dias de Oliveira Evald, Shivam Chaturvedi, Hilton Abilio Gründling, Rodrigo Varella Tambara, Wencong Su   +5 more
wiley   +1 more source