Results 251 to 260 of about 112,357 (298)
Some of the next articles are maybe not open access.
Estimating Membrane Voltage Correlations From Extracellular Spike Trains
Journal of Neurophysiology, 2003The cross-correlation coefficient between neural spike trains is a commonly used tool in the study of neural interactions. Two well-known complications that arise in its interpretation are 1) modulations in the correlation coefficient may result solely from changes in the mean firing rate of the cells and 2) the mean firing rates of the neurons impose ...
Jessy D, Dorn, Dario L, Ringach
openaire +2 more sources
Positive voltage spikes in runaway tokamak discharges
Physics of Plasmas, 2000Positive voltage spikes caused by a fast decrease of the plasma current are observed in runaway dominated discharges in the small Brazilian Tokamak TBR-1[Kuznetsov et al., Phys. Plasmas 6, 4002 (1999)]. Comparison of the measured voltage spike with the value given by the solution of the one-dimensional diffusion equation for the toroidal electric field
I. El Chamaa Neto +4 more
openaire +1 more source
Technology of DC-Link Voltage Spikes Suppression
2020The introduction of coupled inductor renders the appearance of leakage inductance whatever cores or winding techniques are employed, which induces operating problems. For instance, when the coupled inductors impedance source inverters (CISI) transfer from shoot-through (ST) to non-shoot-through (NST) state, a great voltage spike will occur at the DC ...
Hongpeng Liu +5 more
openaire +1 more source
Simulation and Measurement of Spike Voltage over Voltage Transformer Windings
2020• Instrument transformers are subjected to various types of transient overvoltages due to lightning strikes or switching operations during their lifetime. • They are designed to withstand such events for decades with minimal maintenance. • Distribution of lightning impulse transient overvoltages is often computed in order to properly dimension the ...
Trkulja, Bojan +2 more
openaire +3 more sources
Spike voltage topography identifies two types of frontotemporal epileptic foci
Neurology, 1991We characterized voltage topography of frontotemporal EEG spikes in 24 patients with complex partial seizures and identified two distinct patterns. "Type 1" spikes possessed a "dipolar" field with a negative region over the inferolateral temporal scalp and a positive region over the contralateral, centroparietal scalp.
J S, Ebersole, P B, Wade
openaire +2 more sources
In vivo imaging of neuronal voltage spikes
Science, 2015Neuronal Dynamics Neuroscientists have long sought tools that allow optical imaging of individual neurons' membrane voltage dynamics in awake behaving animals. Gong et al. genetically engineered a protein voltage indicator that can report action potentials with
openaire +1 more source
Low voltage DC power supply with spike-blocking features
2013 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2013RFID tags, sensors embedded with buried devices and biomedical implants all operate at low voltage levels due to power limitations. The ever increasing use these embedded devices has also created a demand in the industry for low-voltage power supplies.
A. Lutfi Torla +4 more
openaire +1 more source
Systolic-Array Spiking Neural Accelerators with Dynamic Heterogeneous Voltage Regulation
2021 International Joint Conference on Neural Networks (IJCNN), 2021Spiking neural networks (SNNs) have emerged as a new generation of neural networks, presenting a brain-inspired event-driven model with advantages in spatiotemporal information processing. Due to the need for high power consumption of compute-intensive neural accelerators, adequate power delivery network (PDN) design is a key requirement to ensure ...
Jeong-Jun Lee +3 more
openaire +1 more source
Voltage transient spikes suppression in flyback converter using dissipative voltage snubbers
2008 3rd IEEE Conference on Industrial Electronics and Applications, 2008The Flyback topology results in significant cost and space savings for multiple output power supplies for power levels up to 100 W. Flyback topologies store and transfer energy using a transformer, which due to physical limitations can cause large voltage transient spikes during the switching cycle at the drain of the power switch and at the secondary ...
openaire +1 more source
Voltage Spikes on the Substrate to Obtain Timing Faults
2013 Euromicro Conference on Digital System Design, 2013Fault attacks are widely deployed against secure devices by hardware evaluation centers. While the least expensive fault injection techniques, like clock or voltage glitches, are well taken into account in secure devices by dedicated hardware counter-measures, more advanced techniques, such as light based attacks, require huge investments.
Tobich, Karim +4 more
openaire +1 more source