Neuronal Oscillations in Cortical Networks
György Buzsáki,Andreas Draguhn +1 more
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TLDR
Recent findings indicate that network oscillations bias input selection, temporally link neurons into assemblies, and facilitate synaptic plasticity, mechanisms that cooperatively support temporal representation and long-term consolidation of information.Abstract:
Clocks tick, bridges and skyscrapers vibrate, neuronal networks oscillate. Are neuronal oscillations an inevitable by-product, similar to bridge vibrations, or an essential part of the brain’s design? Mammalian cortical neurons form behavior-dependent oscillating networks of various sizes, which span five orders of magnitude in frequency. These oscillations are phylogenetically preserved, suggesting that they are functionally relevant. Recent findings indicate that network oscillations bias input selection, temporally link neurons into assemblies, and facilitate synaptic plasticity, mechanisms that cooperatively support temporal representation and long-term consolidation of information.read more
Citations
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Shifts in Gamma Phase–Amplitude Coupling Frequency from Theta to Alpha Over Posterior Cortex During Visual Tasks
Bradley Voytek,Ryan T. Canolty,Ryan T. Canolty,Avgusta Y. Shestyuk,Nathan E. Crone,Josef Parvizi,Robert T. Knight,Robert T. Knight +7 more
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Resting oscillatory cortico-subthalamic connectivity in patients with Parkinson's disease
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TL;DR: A newly described, electrophysiological method is used to describe cortico-subthalamic networks in humans and it is suggested that these networks may be involved in attentional and executive, particularly motor planning, processes, respectively.
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Dichotomous Organization of the External Globus Pallidus
Nicolas Mallet,Benjamin R. Micklem,Pablo Henny,Matthew Brown,Claire Williams,J. Paul Bolam,Kouichi Nakamura,Peter J. Magill +7 more
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Increased brain signal variability accompanies lower behavioral variability in development.
TL;DR: Brain signal variability increased with age, and showed strong negative correlations with intrasubject RT variability and positive correlations with accuracy, suggesting that the moment-to-moment variability in brain activity may be a critical index of the cognitive capacity of the brain.
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Complex Oscillatory Waves Emerging from Cortical Organoids Model Early Human Brain Network Development.
Cleber A. Trujillo,Richard Gao,Priscilla D. Negraes,Jing Gu,Justin Buchanan,Sebastian Preissl,Allen Wang,Wei Wu,Gabriel G. Haddad,Isaac A. Chaim,Alain Domissy,Matthieu Vandenberghe,Anna Devor,Gene W. Yeo,Bradley Voytek,Alysson R. Muotri +15 more
TL;DR: Human cortical organoids that dynamically change cellular populations during maturation and exhibited consistent increases in electrical activity over the span of several months show that the development of structured network activity in a human neocortex model may follow stable genetic programming.
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