Multifractality in critical neural field dynamics

Merlin Dumeur; Sheng H. Wang; J. Matias Palva; Philippe Ciuciu

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arXiv · 2312.03219

Multifractality in critical neural field dynamics

Merlin Dumeur·Sheng H. Wang·J. Matias Palva·Philippe Ciuciu

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Abstract

The brain criticality hypothesis has largely only characterized brain dynamics in terms of their self-similarity, although experimental evidence suggests that the brain exhibits significant multifractality. To understand how multifractality may emerge in critical-like systems modeling neuronal activity, we used a neural field model exhibiting neural oscillations and a critical phase transition. We find that multifractality emerges near a synchronization phase transition, and that the pattern of variation of multifractality changes when placing the model at a different phase transition. These findings show that multifractality in temporal dynamics emerges near criticality in neural fields, providing a formal basis for interpreting multifractality in brain recordings.

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Merlin Dumeur, Sheng H. Wang, J. Matias Palva, Philippe Ciuciu. 2023-12-06. Multifractality in critical neural field dynamics. https://arxiv.org/abs/2312.03219

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