Results 141 to 150 of about 363,862 (308)

Amyloid-β induces synaptic dysfunction through G protein-gated inwardly rectifying potassium channels in the fimbria-CA3 hippocampal synapse

Frontiers in Cellular Neuroscience, 2013
Last evidences suggest that, in Alzheimer's disease (AD) early stage, Amyloid-β (Aβ) peptide induces an imbalance between excitatory and inhibitory neurotransmission systems resulting in the functional impairment of neural networks.
Mauricio O. Nava-Mesa, Mauricio O. Nava-Mesa, Lydia eJimenez-Diaz, Javier eYajeya, Juan D Navarro-Lopez   +4 more
doaj   +1 more source

Emulation of Synaptic Plasticity in WO3‐Based Ion‐Gated Transistors

Advanced Electronic Materials, EarlyView.
This study investigates the synaptic plasticity of WO3‐based IGTs for neuromorphic computing. It examines the impact of ionic gating media, i.e., [EMIM][TFSI] and ‎LiTFSI in [EMIM][TFSI], on the nanoscale structure of electrical double layers and IGT response times and plasticity.
Ramin Karimi Azari, Luan Pereira Camargo, José Ramón Herrera Garza, Liam Collins, Wan− Yu Tsai, Lariel Chagas da Silva Neres, Patrick Dang, Martin Schwellberger Barbosa, Clara Santato   +8 more
wiley   +1 more source

Chronobiology of Epilepsy [PDF]

, 2008
A fine balance between neuronal excitation and inhibition governs the physiological state of the brain. It has been hypothesized that when this balance is lost as a result of excessive excitation or reduced inhibition, pathological states such as ...
Dong-Uk Hwang, Hector Sepulveda, Mark Spano, Paul Carney, Sachin S. Talathi, Tom Mareci, William Ditto   +6 more
core   +1 more source

All-electric mimicking synaptic plasticity based on the noncollinear antiferromagnetic device [PDF]

arXiv
Neuromorphic computing, which seeks to replicate the brain's ability to process information, has garnered significant attention due to its potential to achieve brain-like computing efficiency and human cognitive intelligence. Spin-orbit torque (SOT) devices can be used to simulate artificial synapses with non-volatile, high-speed processing and ...
arxiv  

Ge N‐Channel Ferroelectric FET Memory With Al2O3/AlN Interfacial Layer by Microwave Annealing

Advanced Electronic Materials, EarlyView.
The first Ge n‐channel FeFET memory devices have been demonstrated. By employing an Al2O3/AlN interfacial layer combined with low thermal budget microwaving annealing, a desirable memory window as well as triple‐level cell storage capability with good reliability have been achieved.
Sheng‐Yen Zheng, Wei‐Ning Kao, Yu‐Hsing Chen, Yung‐Hsien Wu   +3 more
wiley   +1 more source

A Markovian event-based framework for stochastic spiking neural networks

, 2011
In spiking neural networks, the information is conveyed by the spike times, that depend on the intrinsic dynamics of each neuron, the input they receive and on the connections between neurons. In this article we study the Markovian nature of the sequence
A Delorme, A Delorme, A Holden, A Lachal, A Lachal, A Roxin, A Tonnelier, Arbib, B Cessac, C Fricker, E Claverol, E Gobet, E Kandel, E Rolls, EM Izhikevich, H Gromoll, HC Tuckwell, HP McKean, I Karatzas, J Touboul, J Touboul, Jonathan D. Touboul, L Ricciardi, L Watts, M Cottrell, M Cottrell, M Davis, M Fabre-Thorpe, M Goldman, M Rudolph, MN Shadlen, N Brunel, Olivier D. Faugeras, P Kloeden, R Brette, R Brette, R Brette, S Asmussen, S Thorpe, T Makino, T Turova, TS Turova, W Gerstner, W Gerstner, WR Softky   +44 more
core   +2 more sources

Contribute to balance, wire in accordance: Emergence of backpropagation from a simple, bio-plausible neuroplasticity rule [PDF]

arXiv
Backpropagation (BP) has been pivotal in advancing machine learning and remains essential in computational applications and comparative studies of biological and artificial neural networks. Despite its widespread use, the implementation of BP in the brain remains elusive, and its biological plausibility is often questioned due to inherent issues such ...
arxiv  

Two‐Terminal MoS2‐Based Retinomorphic Devices with Enhanced Synaptic Plasticity

Advanced Electronic Materials, EarlyView.
The two‐terminal retinormorphic devices are demonstrated on the functionalized substrate through plasma treatment. The functionalized substrate serves recombination centers, which can control the decay dynamics of excited carriers. These make modulating synaptic plasticity possible in two‐terminal retinormorphic devices.
Younghoon Lim, Taehun Kim, Jaesik Eom, Onsik Harm, Junsung Byeon, Jungmoon Lim, Juwon Lee, Sangyeon Pak, SeungNam Cha   +8 more
wiley   +1 more source

Excitatory amino acid transporters (EAATs) restrain nucleus tractus solitarii (nTS) activity induced by ionotropic and metabotropic glutamate receptor activation

Revista Cubana de Investigaciones Biomédicas, 2020
Introduction: Glutamate (Glu) is the primary excitatory amino acid neurotransmitter released from visceral afferents in the nTS. Glu binds to postsynaptic ionotropic glutamate receptors (iGluRs, AMPA or NMDA) to induce rapid phasic synaptic currents and ...
David D. Kline, Michael P. Matott, Diana Martinez   +2 more
doaj  

Simulation α of EEG using brain network model [PDF]

, 2017
In this paper, we developed a large-scale brain network model comprising of four cerebral areas in the left hemisphere, and each area is modelled as an oscillator Jansen and Rit (JR) model.
Al-Hossenat, Auhood, Li, Yan, Wen, Paul
core