Results 61 to 70 of about 156,710 (324)

Alterations in brain connectivity due to plasticity and synaptic delay

, 2017
Brain plasticity refers to brain's ability to change neuronal connections, as a result of environmental stimuli, new experiences, or damage. In this work, we study the effects of the synaptic delay on both the coupling strengths and synchronisation in a ...
Batista, A. M., Borges, F. S., Borges, R. R., Caldas, I. L., Iarosz, K. C., Lameu, E. L., Macau, E. E. N., Protachevicz, P. R., Viana, R. L.   +8 more
core   +1 more source

The translational repressors Nanos and Pumilio have divergent effects on presynaptic terminal growth and postsynaptic glutamate receptor subunit composition [PDF]

, 2009
Pumilio (Pum) is a translational repressor that binds selectively to target mRNAs and recruits Nanos (Nos) as a corepressor. In the larval neuromuscular system, Pum represses expression of the translation factor eIF-4E and the glutamate receptor subunit ...
Andrews, Shane, Gavis, Elizabeth R., Menon, Kaushiki P., Murthy, Mala, Zinn, Kai   +4 more
core   +1 more source

An Ultra‐Robust Memristor Based on Vertically Aligned Nanocomposite with Highly Defective Vertical Channels for Neuromorphic Computing

Advanced Functional Materials, EarlyView.
An ultra‐robust memristor based on SrTiO3‐CeO2 (S‐C) vertically aligned nanocomposite (VAN) achieving exceptional endurance of 1012 switching cycles via interface engineering. Artificial neural networks (ANNs) integrated with S‐C VAN memristors exhibit high training accuracy across multiple datasets.
Zedong Hu, Hongyi Dou, Jeremy B. Gan, Cun Li, Xuanyu Sheng, Juanjuan Lu, Abhijeet Choudhury, Jialong Huang, Yizhi Zhang, Zhongxia Shang, Ye Cao, Xinghang Zhang, Haiyan Wang   +12 more
wiley   +1 more source

Synaptic partner prediction from point annotations in insect brains

, 2018
High-throughput electron microscopy allows recording of lar- ge stacks of neural tissue with sufficient resolution to extract the wiring diagram of the underlying neural network.
A Kreshuk, A Kreshuk, A Kreshuk, B Staffler, C Becker, N Kasthuri, O Ronneberger, S Dorkenwald, V Jagadeesh   +8 more
core   +1 more source

Presynaptic actions of 4-Aminopyridine and γ-aminobutyric acid on rat sympathetic ganglia in vitro [PDF]

, 1980
Responses to bath-applications of 4-aminopyridine (4-AP) and -aminobutyric acid (GABA) were recorded intracellularly from neurones in the rat isolated superior cervical ganglion.
A Nistri, A Tokunaga, B Hue, B Katz, C Nicholson, CL Schauf, DA Brown, DA Brown, DA Brown, DA Brown, DA McAfee, DI Wallis, E Jankowska, E Kato, E Kato, G. ten Bruggencate, H Lundh, H Lundh, H Meves, IG Marshall, JE Heuser, JZ Yeh, JZ Yeh, K Golenhofen, M Lemeignan, M Lemeignan, M. Galvan, NG Bowery, P. Grafe, PR Adams, R Llinás, SY Chiu, T Brismar, T Yanagisawa, W Ulbricht, WC Bowman, WW Douglas   +36 more
core   +1 more source

Analysis of fast excitatory postsynaptic currents in bullfrog parasympathetic ganglion cells [PDF]

The Journal of Neuroscience, 1983
Excitatory postsynaptic currents (EPSCs), miniature excitatory postsynaptic currents (MEPSCs), and acetylcholine-induced current fluctuations (noise) have been studied in voltage-clamped bullfrog parasympathetic ganglion cells of the atrial septum. EPSCs were also recorded from voltage-clamped sympathetic B cells and, in general, it was found that the ...
E A, Connor, R L, Parsons
openaire   +2 more sources

A 3D Biofabricated Disease Model Mimicking the Brain Extracellular Matrix Suitable to Characterize Intrinsic Neuronal Network Alterations in the Presence of a Breast Tumor Disseminated to the Brain

Advanced Functional Materials, EarlyView.
A 3D disease model is developed using customized hyaluronic‐acid‐based hydrogels supplemented with extracellular matrix (ECM) proteins resembling brain ECM properties. Neurons, astrocytes, and tumor cells are used to mimic the native brain surrounding.
Esra Türker, Mateo S. Andrade Mier, Jessica Faber, Mike Friedrich, Zan Lamberger, Jeannette Weigelt, Christian Stigloher, Nicoletta Murenu, Natascha Schaefer, Jörg Tessmar, Gregor Lang, Silvia Budday, Katrin G. Heinze, Antje Appelt‐Menzel, Pamela L. Strissel, Reiner Strick, Carmen Villmann   +16 more
wiley   +1 more source

Neuronal Synchronization Can Control the Energy Efficiency of Inter-Spike Interval Coding [PDF]

, 2018
The role of synchronous firing in sensory coding and cognition remains controversial. While studies, focusing on its mechanistic consequences in attentional tasks, suggest that synchronization dynamically boosts sensory processing, others failed to find ...
Ghavami, Siavash, Lahouti, Farshad, Rahmati, Vahid, Schwabe, Lars   +3 more
core   +1 more source

Chemokine fractalkine/CX3CL1 negatively modulates active glutamatergic synapses in rat hippocampal neurons [PDF]

, 2006
We examined the effects of the chemokine fractalkine (CX3CL1) on EPSCs evoked by electrical stimulation of Schaffer collaterals in patch-clamped CA1 pyramidal neurons from rat hippocampal slices.
BERTOLLINI, Cristina, CHARO IF, DI ANGELANTONIO, SILVIA, EUSEBI, Fabrizio, GROSS C, LIMATOLA, Cristina, MAGGI, Laura, RAGOZZINO, Davide Antonio, TRETTEL, Flavia   +8 more
core   +1 more source

Universal Neuromorphic Element: NbOx Memristor with Co‐Existing Volatile, Non‐Volatile, and Threshold Switching

Advanced Functional Materials, EarlyView.
A W/NbOx/Pt memristor demonstrates the coexistence of volatile, non‐volatile, and threshold switching characteristics. Volatile switching serves as a reservoir computing layer, providing dynamic short‐term processing. Non‐volatile switching, stabilized through ISPVA, improves reliable long‐term readout. Threshold switching operates as a leaky integrate
Ungbin Byun, Hyesung Na, Sungjun Kim
wiley   +1 more source