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Tf. Varley

2 papers in the library · 8 citations · publishing 2019

Papers

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Fractal Dimension of Cortical Functional Connectivity Networks Predicts Severity in Disorders of Consciousness

bioRxiv Preprint Server October 1, 2019 Tf. Varley, M. Craig, Ram Adapa et al. preprint

Recent evidence suggests that the quantity and quality of conscious experience may be a function of the complexity of activity in the brain, and that consciousness emerges in a critical zone on the axes of order/randomness and integration/differentiation. We propose fractal shapes as a measure of proximity to this critical point, as fractal dimension encodes information about complexity beyond...

Serotonergic Psychedelics LSD & Psilocybin Increase the Fractal Dimension of Cortical Brain Activity in Spatial and Temporal Domains

bioRxiv (Cold Spring Harbor Laboratory) January 11, 2019 Tf. Varley, Robin Carhart-Harris, Leor Roseman et al. 8 citations preprint

Abstract Psychedelic drugs, such as psilocybin and LSD, represent unique tools for researchers in-vestigating the neural origins of consciousness. Currently, the most compelling theories of how psychedelics exert their effects is by increasing the complexity of brain activity and moving the system towards a critical point between order and disorder, creating more dynamic and complex patterns of...