Although recovery from spinal cord injury is generally meager, evidence suggests that step training can improve stepping performance, particularly after neonatal spinal injury. The location and nature of the changes in neural substrates underlying the behavioral improvements are not well understood. We examined the kinematics of stepping performance and cellular and synaptic electrophysiologica...

[1] The MF data recorded by the low-altitude satellite DEMETER have been used to survey the MF waves around the Earth. A global map of the MF emissions indicates that there exists a wave activity in the frequency range 2–2.5 MHz above the main powerful VLF ground-based transmitters operating in the frequency range 18–50 kHz. It is shown that this is due to the high-frequency part of whistlers i...

2014 By using a full electromagnetic-wave theory, an analysis is made of the ELF/VLF radiation resistance of a finite electric dipole, oriented at arbitrary angle in a cold, uniform magnetoplasma. The general integral expression for the radiation resistance R is derived, and from that, various approximate closed forms of R are obtained for the entire VLF/ELF range. Numerical plots of R are give...

The large (V/m) mesospheric electric fields have been identified as a possible cause of VLF phase perturbations. These fields affect the fundamental processes that govern the lower D region parameters, primarily the electron temperature and effective collision frequency. The main ionospheric parameter needed to calculate VLF phase perturbations is the low-frequency electron plasma conductivity....

Mathematical modeling and analysis of a DRT-VLF high voltage test generator. Due to the forced construction of regenerative decentralized power generation systems, high and ultra high voltage cables are frequently used, such that the demand on an efficient possibility for the on-site testing of the quality of the cables has increased in recent years. Therefore, test generators with very low fre...

[1] An array of seven ELF/VLF receivers in Alaska is utilized for direction finding and determination of ionospheric exit point of whistler mode chorus waves from the Earth’s magnetosphere. Each receiver records both orthogonal horizontal magnetic components of the chorus waves. All sites use GPS-synchronized sampling, allowing for the localization of ionospheric exit points utilizing both arri...

Abstract Auroral whistler‐mode radio emissions called saucers are of fundamental interest because they require an unusually stationary emission process in the dynamic auroral environment, and it is a mystery how that can happen this or similar conditions elsewhere geospace. The Cusp Alfvén Plasma Electrodynamics Rocket (CAPER‐2), launched into cusp, obtained first rocket measurements large‐scal...

The paper reports the characteristic variation in the received radio signals at VHF and VLF bands over Kalyani during two severe earthquakes, one at Sikkim on September 18, 2011 and the other at Indonesia on April 11, 2012.