Results 71 to 80 of about 4,507 (256)

Coordinated optimization of visual cortical maps : 1. Symmetry-based analysis

, 2012
In the primary visual cortex of primates and carnivores, functional architecture can be characterized by maps of various stimulus features such as orientation preference (OP), ocular dominance (OD), and spatial frequency.
Heide, Dominik, Justin C. Crowley (120185), Wolf, Fred, Dominik Heide, Fred Wolf, Matthias Kaschube, Heide, D., Löwel, Siegrid, Crowley, Justin C., Kaschube, Matthias, Dominik Heide (120181), Reichl, L., Kaschube, M., Justin C Crowley, Reichl, Lars, Löwel, S., Lars Reichl, Lars Reichl (120178), Siegrid Löwel, Wolf, F., Siegrid Löwel (53603), Fred Wolf (120189), Crowley, J., Matthias Kaschube (120187)   +23 more
core   +1 more source

Stable Learning of Functional Maps in Self-Organizing Spiking Neural Networks with Continuous Synaptic Plasticity

Frontiers in Computational Neuroscience, 2013
This study describes a spiking model that self-organizes for stable formation and maintenance of orientation and ocular dominance maps in the visual cortex (V1).
Narayan eSrinivasa, Qin eJiang
doaj   +1 more source

Pull-push neuromodulation of cortical plasticity enables rapid bi-directional shifts in ocular dominance

eLife, 2020
Neuromodulatory systems are essential for remodeling glutamatergic connectivity during experience-dependent cortical plasticity. This permissive/enabling function of neuromodulators has been associated with their capacity to facilitate the induction of ...
Su Z Hong, Shiyong Huang, Daniel Severin, Alfredo Kirkwood   +3 more
doaj   +1 more source

Mutual interaction between visual homeostatic plasticity and sleep in adult humans

eLife, 2022
Sleep and plasticity are highly interrelated, as sleep slow oscillations and sleep spindles are associated with consolidation of Hebbian-based processes.
Danilo Menicucci, Claudia Lunghi, Andrea Zaccaro, Maria Concetta Morrone, Angelo Gemignani   +4 more
doaj   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Rapid Ocular Dominance Plasticity Requires Cortical but Not Geniculate Protein Synthesis

, 2002
Synaptic plasticity is a multistep process in which rapid, early phases eventually give way to slower, more enduring stages. Diverse forms of synaptic change share a common requirement for protein synthesis in the late stages of plasticity, which are ...
Stryker, Michael P., Taha, Sharif
core   +1 more source

Inhibition of Semaphorin3A Promotes Ocular Dominance Plasticity in the Adult Rat Visual Cortex [PDF]

, 2019
Perineuronal nets (PNNs) are condensed structures in the extracellular matrix that mainly surround GABA-ergic parvalbumin-positive interneurons in the adult brain. Previous studies revealed a parallel between PNN formation and the closure of the critical
Vander Kooi, Craig W., Verhaagen, Joost, Baroncelli, Laura, Mecollari, Vasilis, Ehlert, Erich M, Fawcett, James W., Ehlert, Erich M., Moloney, Elizabeth B., Blits, Bas, Moloney, Elizabeth B, Vander Kooi, Craig W, Boggio, Elena Maria, Fawcett, James W, De Winter, Fred, Lupori, Leonardo, Pizzorusso, Tommaso   +15 more
core   +1 more source

The impact of exogenous Oxytocin on visual cortex plasticity across different stages of visual development

Scientific Reports
The plasticity of ocular dominance is most prominent during the critical period of visual development, influenced by the balance of excitatory and inhibitory synaptic transmission in the visual cortex.
Yifan Sun, Xiao Wang, Yamin Chen, Zichen Luan, Rui Hao   +4 more
doaj   +1 more source

Microstructure‐Controlled Crack Propagation and Fracture Resistance in MoSiBTiC Alloy Revealed by Multiscale Extended Finite Element Method Modeling

Advanced Engineering Materials, EarlyView.
A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du, Takahiro Kaneko, Xinyu Yan, Takahito Ohmura, Kyosuke Yoshimi   +4 more
wiley   +1 more source

NMDA Receptor-Dependent Ocular Dominance Plasticity in Adult Visual Cortex

, 2003
The binocular region of mouse visual cortex is strongly dominated by inputs from the contralateral eye. Here we show in adult mice that depriving the dominant contralateral eye of vision leads to a persistent, NMDA receptor-dependent enhancement of the ...
Tonegawa, Susumu, Philpot, Benjamin D, Bear, Mark F, Nakazawa, Kazu, Sawtell, Nathaniel B, Frenkel, Mikhail Y   +5 more
core   +1 more source