Recent research suggests that neural oscillations in different frequency bands support distinct and sometimes parallel processing streams in neural circuits. Studies of the neural dynamics of human motor control have primarily focused on oscillations in the beta band (15-30 Hz). During sustained muscle contractions, corticomuscular coherence is mainly present in the beta band, while coherence i...

The bright Seyfert 1 galaxy MCG -6-30-15 shows large variability on a variety of timescales. We study the less, similar3 day timescale variability using a set of simultaneous archival observations that were obtained from the Rossi X-Ray Timing Explorer (RXTE) and the Advanced Satellite for Cosmology and Astrophysics (ASCA). The RXTE observations span nearly 106 s and indicate that the X-ray Fou...

objective: the aim of this study was to compare the qeeg of adolescents affected by bipolar ii disorder with age and gender matched healthy controls, and to extract the characteristics of the alpha frequency band to better understand this disorder. methods: twenty one adolescents affected by acute episodes of bipolar ii disorder (bmd ii), both hypomanic and depressive episodes, were selected vi...

Previous studies have demonstrated how augmented feedback can accelerate motor learning. Still, specific features of complexity and intermittency influence learning a challenging, force-driven task remains largely unknown. This study is an initial investigation variations in the visual guidance affect performance isometric muscle control with computerized platform. novel platform has been devel...

Biological studies suggest that neurons in the mammalian retina accomplish a dynamic segmentation of the visual input. When activated by large, high contrast spots, retinal spike trains exhibit high frequency oscillations in the upper gamma band, between 60 to 120 Hz. Despite random phase variations over time, the oscillations recorded from regions responding to the same spot remain phase locke...

We numerically investigate turbulent Rayleigh-B\'enard convection within two immiscible fluid layers, aiming to understand how the layer thickness and properties affect heat transfer (characterized by Nusselt number $Nu$) in two-layer systems. Both two- three-dimensional simulations are performed at fixed global Rayleigh $Ra=10^8$, Prandtl $Pr=4.38$, Weber $We=5$. vary relative of upper between...

Here, we report evidence for oscillatory bi-directional interactions between the nucleus accumbens and the neocortex in humans. Six patients performed a demanding covert visual attention task while we simultaneously recorded brain activity from deep-brain electrodes implanted in the nucleus accumbens and the surface electroencephalogram (EEG). Both theta and alpha oscillations were strongly coh...

Reference 1. Cross-Villasana F, Gröpel P, Doppelmayr M, Beckmann J (2015) Unilateral Left-Hand Contractions ProduceWidespread Depression of Cortical Activity after Their Execution. PLoS ONE 10(12): e0145867. doi:10.1371/journal.pone.0145867 PMID: 26709832 Fig 2. Spectral plot of the last second during contractions (black), first second after contractions (red), and their difference (gray). A) F...

In recent years, a large number of dual-band antennas have been developed for wireless applications [1]-[6]. Most of these dual-band antennas are used for mobile terminals, such as cellular phones or laptop computers. For such applications, the desirable radiation patterns are usually omnidirectional. A unidirectional radiation pattern is sometime required for wireless base station and/or acces...

Task-related power changes in the EEG alpha band were analyzed in 31 participants (17 males and 14 females) during performance of two verbal creativity tasks. Participants were confronted with verbal problems that are in need of explanation (insight problems) and utopian situations that will actually never happen. In both tasks they were instructed to generate as many but also as unusual, uniqu...