Results 91 to 100 of about 10,304,482 (352)

Phase transition for infinite systems of spiking neurons [PDF]

, 2018
We prove the existence of a phase transition for a stochastic model of interacting neurons. The spiking activity of each neuron is represented by a point process having rate $1 $ whenever its membrane potential is larger than a threshold value. This membrane potential evolves in time and integrates the spikes of all {\it presynaptic neurons} since the ...
arxiv   +1 more source

α‐Synuclein Pathology Spreads in a Midbrain–Hindbrain Assembloid Model

Advanced Science, EarlyView.
A novel midbrain–hindbrain assembloid model demonstrates the spread of α‐synuclein pathology, a hallmark of Parkinson's disease, mimicking Braak's hypothesis. This model reveals how pathology propagates from the hindbrain to the midbrain, inducing synaptic changes and early signs of neuronal vulnerability. It offers an innovative platform for exploring
Gemma Gomez‐Giro, Daniela Frangenberg, Daniela Vega, Alise Zagare, Kyriaki Barmpa, Paul M. A. Antony, Graham Robertson, Rahman Sabahi‐Kaviani, Kristian Haendler, Nathalie Kruse, Florentia Papastefanaki, Rebecca Matsas, Malte Spielman, Regina Luttge, Jens C. Schwamborn   +14 more
wiley   +1 more source

Consequences and Mechanisms of Noise‐Induced Cochlear Synaptopathy and Hidden Hearing Loss, With Focuses on Signal Perception in Noise and Temporal Processing

Advanced Science, EarlyView.
Noise‐induced synaptopathy (NIS) is largely reversible due to self‐repair. NIS and noise‐induced hidden hearing loss are two concepts with similarities and differences. The major hearing deficits in NIHHL are temporal processing disorders. The translation of animal data in NIS studies to humans is hindered by many factors.
Hui Wang, Steven J Aiken, Jian Wang
wiley   +1 more source

Deciphering Auditory Hyperexcitability in Otogl Mutant Mice Unravels an Auditory Neuropathy Mechanism

Advanced Science, EarlyView.
By investigating auditory hyperexcitability in a mouse model for hereditary deafness, this study identified a subpopulation of afferent neurons of the auditory nerve marked by Otogl expression. Despite their apparently normal hearing, Otogl+/− mice display poor activation of afferent neurons processing loud sounds and an elevation of the middle the ear
Mathilde Gagliardini, Sabrina Mechaussier, Carolina Campos Pina, Monica Morais, Olivier Postal, Philippe Jean, Typhaine Dupont, Amrit Singh‐Estivalet, Shéhanie Udugampolage, Cyril Scandola, Elisabeth Verpy, Baptiste Libé‐Philippot, Talya C. Inbar, Joanna Schwenkgrub, Carla Maria Barbosa Spinola, Raphaël Etournay, Aziz El‐Amraoui, Brice Bathellier, Adeline Mallet, Sedigheh Delmaghani, Fabrice Giraudet, Christine Petit, Boris Gourévitch, Paul Avan, Nicolas Michalski   +24 more
wiley   +1 more source

Imbalance of Excitation and Inhibition at Threshold Level In the Auditory Cortex

Frontiers in Neural Circuits, 2015
The interplay of cortical excitation and inhibition is a fundamental feature of cortical information processing. Excitation and inhibition in single cortical neurons are balanced in their response to optimal sensory stimulation due to thalamocortical ...
Yan eZhao, Yan eZhao, Zizhen eZhang, Xiuping eLiu, Colin eXiong, Zhongju eXiao, Jun eYan   +6 more
doaj   +1 more source

Pre- and post-synaptic roles for DCC in memory consolidation in the adult mouse hippocampus

Molecular Brain, 2020
The receptor deleted in colorectal cancer (DCC) and its ligand netrin-1 are essential for axon guidance during development and are expressed by neurons in the mature brain.
Stephen D. Glasgow, Edwin W. Wong, Greta Thompson-Steckel, Nathalie Marcal, Philippe Séguéla, Edward S. Ruthazer, Timothy E. Kennedy   +6 more
doaj   +1 more source

A53T Mutant Alpha-Synuclein Induces Tau-Dependent Postsynaptic Impairment Independently of Neurodegenerative Changes

Journal of Neuroscience, 2018
Abnormalities in α-synuclein are implicated in the pathogenesis of Parkinson's disease (PD). Because α-synuclein is highly concentrated within presynaptic terminals, presynaptic dysfunction has been proposed as a potential pathogenic mechanism.
Peter J. Teravskis, A. Covelo, Eric C. Miller, Balvindar Singh, Héctor A. Martell-Martínez, M. Benneyworth, Christopher Gallardo, Breeta R. Oxnard, A. Araque, Michael K. Lee, D. Liao   +10 more
semanticscholar   +1 more source

Structural Diversity of Mitochondria in the Neuromuscular System across Development Revealed by 3D Electron Microscopy

Advanced Science, EarlyView.
Mitochondria across the entire neuromuscular system have been comprehensively reconstructed at different developmental stages using 3D electron microscopy. Fundamental structural principles related to synaptic function are preserved across development, and these morphologies are adapted to ensure effective neural circuit function.
J. Alexander Bae, Myung‐kyu Choi, Soungyub Ahn, Gwanho Ko, Daniel T. Choe, Hyunsoo Yim, Ken C. Nguyen, Jinseop S. Kim, David H. Hall, Junho Lee   +9 more
wiley   +1 more source

SNAP-25, a Known Presynaptic Protein with Emerging Postsynaptic Functions

Frontiers in Synaptic Neuroscience, 2016
A hallmark of synaptic specializations is their dependence on highly organized complexes of proteins that interact with each other. The loss or modification of key synaptic proteins directly affects the properties of such networks, ultimately impacting ...
F. Antonucci, I. Corradini, G. Fossati, Romana Tomasoni, E. Menna, M. Matteoli   +5 more
semanticscholar   +1 more source

Firing Cell: An Artificial Neuron with a Simulation of Long-Term-Potentiation-Related Memory [PDF]

ISAROB 2006, pp.731-734, 2017
We propose a computational model of neuron, called firing cell (FC), properties of which cover such phenomena as attenuation of receptors for external stimuli, delay and decay of postsynaptic potentials, modification of internal weights due to propagation of postsynaptic potentials through the dendrite, modification of properties of the analog memory ...
arxiv