Results 31 to 40 of about 1,390,482 (290)

Non-rapid eye movement sleep with low muscle tone as a marker of rapid eye movement sleep regulation

BMC Neuroscience, 2006
Background It was recently reported that epochs of non-REM sleep (NREMS) with low muscle tone represent a partial correlate of REM sleep (REMS). To further investigate this phenomenon, episodes of restricted night-time sleep (23:00 – 03.00h) and ...
Borbély Alexander A, Huber Reto, Tinguely Gilberte, Achermann Peter   +3 more
doaj   +1 more source

Does the core collapse in globular clusters onset before than commonly believed? [PDF]

, 2018
An analysis of the structural parameters of globular clusters (GCs) carried out by using data contained in the Harris Catalogue indicates a clear missing coincidence between the maximum of the W0-distribution and the onset of gravothermal instability ...
Merafina, Marco
core   +1 more source

Critical Phenomena in Light–Matter Systems with Collective Matter Interactions

Entropy, 2022
We study the quantum phase diagram and the onset of quantum critical phenomena in a generalized Dicke model that includes collective qubit–qubit interactions.
Ricardo Herrera Romero, Miguel Angel Bastarrachea-Magnani, Román Linares   +2 more
doaj   +1 more source

Long-term rearrangement of retinal structures in a novel mutation of X-linked retinoschisis [PDF]

, 2017
The aim of the present study was to report a novel mutation in the retinoschisin 1 (RS1) gene in a Caucasian family affected by X-linked juvenile retinoschisis (XLRS) and to describe the long-term modification of retinal structure.
Colavito, Davide, Giudice Elda, Del, Leon, Alberta, Maritan, Veronica, Miotto, Stefania, Patrizia Tormene, Alma, Piermarocchi, Rita, Piermarocchi, Stefano   +7 more
core   +1 more source

Correspondence of the sign change in organic magnetoresistance with the onset of bipolar charge transport

Applied Physics Letters, 2008
In this work we examine the transition between positive and negative organic magnetoresistance in poly[2-methoxy-5-(3′, 7′-dimethyloctyloxy)-p-phenylenevinylene] in order to understand how different regimes of charge transport affect the organic magnetoresistance effect. To characterize the charge transport in these devices we measured the current, low
Bloom, F.L., Wagemans, W., Kemerink, M., Koopmans, B.   +3 more
openaire   +2 more sources

Migraine aura-like headache in occipital lobe brain tumors [PDF]

Romanian Journal of Neurology, 2019
Background. Headache is a common symptom in brain tumors. In agreement with the International Headache Society, tumor headache belongs to the headache attributed to neoplasia. It has nonspecific characteristics regarding the type of pain that is diffused
Domenico Chirchiglia, Pasquale Chirchiglia, Rosa Marotta   +2 more
doaj   +1 more source

Dynamic imaging of coherent sources reveals different network connectivity underlying the generation and perpetuation of epileptic seizures [PDF]

, 2013
The concept of focal epilepsies includes a seizure origin in brain regions with hyper synchronous activity (epileptogenic zone and seizure onset zone) and a complex epileptic network of different brain areas involved in the generation, propagation, and ...
Anwar, Abdul Rauf, Deuschl, Günther, Elshoff, Lydia, Muthuraman, Muthuraman, Raethjen, Jan, Siniatchkin, Michael, Stephani, Ulrich   +6 more
core   +3 more sources

Dual characterization of critical fluctuations: Density functional theory & nonlinear dynamics close to a tangent bifurcation

, 2017
We improve on the description of the relationship that exists between critical clusters in thermal systems and intermittency near the onset of chaos in low-dimensional systems.
Riquelme-Galvan, M., Robledo, A.
core   +1 more source

The spatiotemporal pattern of the human electroencephalogram at sleep onset after a period of prolonged wakefulness [PDF]

, 2019
During the sleep onset (SO) process, the human electroencephalogram (EEG) is characterized by an orchestrated pattern of spatiotemporal changes. Sleep deprivation (SD) strongly affects both wake and sleep EEG, but a description of the topographical EEG ...
Aurora D’Atri, Chiara Bartolacci, Cristina Marzano, Fabio Moroni, Luigi De Gennaro, Luigi De Gennaro, Maurizio Gorgoni, Michele Ferrara, Serena Scarpelli   +8 more
core   +2 more sources

Spin-gap effect on resistivity in the t-J model

, 1999
We calculate the spin-gap effect on dc resistivity in the t-J model of high-$T_{\rm c}$ cuprates by using the Ginzburg-Landau theory coupled with a gauge field as its effective field theory to get $\rho(T) \propto T \{1-c\:(T^* -T)^d \}$, where $T^*$ is ...
Anderson P. W., Bucher B., Chakravarty S., Chakravarty S., Coleman S., Gurvitch M., Halperin B. I., Halperin B. I., Hwang H. Y., Ichinose I., Ichinose I., Ioffe I., Ioffe L., Ito T., Kajantie K., Kajantie K., Kleinert H., Lee P. A., Nagaosa N., Nagaosa N., Nagaosa N., Nagaosa N., Nishikawa T., Onoda M., Rossat-Mignot J., Takeda J., Takigawa M., Tranquada J. M., Ubbens M. U., Yamamoto H., Zhang F. C.   +30 more
core   +1 more source