Eyes Open on Sleep and Wake: In Vivo to In Silico Neural Networks

Neural Plasticity
Amaury VanvinckenroyeSarah L Chellappa

Abstract

Functional and effective connectivity of cortical areas are essential for normal brain function under different behavioral states. Appropriate cortical activity during sleep and wakefulness is ensured by the balanced activity of excitatory and inhibitory circuits. Ultimately, fast, millisecond cortical rhythmic oscillations shape cortical function in time and space. On a much longer time scale, brain function also depends on prior sleep-wake history and circadian processes. However, much remains to be established on how the brain operates at the neuronal level in humans during sleep and wakefulness. A key limitation of human neuroscience is the difficulty in isolating neuronal excitation/inhibition drive in vivo. Therefore, computational models are noninvasive approaches of choice to indirectly access hidden neuronal states. In this review, we present a physiologically driven in silico approach, Dynamic Causal Modelling (DCM), as a means to comprehend brain function under different experimental paradigms. Importantly, DCM has allowed for the understanding of how brain dynamics underscore brain plasticity, cognition, and different states of consciousness. In a broader perspective, noninvasive computational approaches, such as DC...Continue Reading

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Citations

Dec 27, 2017·Neuroscience and Biobehavioral Reviews·Serena CaverzasioSalvatore Galati

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Methods Mentioned

BETA
sedation

Software Mentioned

Dynome
DCM
GCM

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