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Related Experiment Video

Updated: Jun 21, 2026

Dynamic Inter-subject Functional Connectivity Reveals Moment-to-Moment Brain Network Configurations Driven by Continuous or Communication Paradigms

Dynamic Inter-subject Functional Connectivity Reveals Moment-to-Moment Brain Network Configurations Driven by Continuous or Communication Paradigms

Published on: March 21, 2019

Ising-like dynamics in large-scale functional brain networks.

Daniel Fraiman¹, Pablo Balenzuela, Jennifer Foss

¹Departamento de Matemática y Ciencias, Universidad de San Andrés and CONICET, Buenos Aires 1644, Argentina.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|August 8, 2009

Summary

This summary is machine-generated.

Human brain activity during rest shows similarities to critical states in physics. This suggests the brain may operate near a critical point, a dynamic state with unique properties.

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Area of Science:

Neuroscience
Statistical Physics
Complex Systems

Background:

Defining brain 'rest' as a state with no explicit input or output is challenging.
Understanding the dynamical state of the resting brain is crucial for neuroscience.
The Ising model provides a framework for studying phase transitions in physical systems.

Purpose of the Study:

To investigate if the resting brain's dynamical state resembles known dynamical states in physics.
To compare brain functional networks with those from physical models.

Main Methods:

Functional magnetic resonance imaging (fMRI) was used to capture human brain activity.
Correlation networks were extracted from fMRI data.
Correlation networks were generated from numerical simulations of the 2D Ising model at various temperatures.
Statistical properties of brain networks and Ising model networks were compared.

Main Results:

Striking similarities were observed between brain correlation networks and Ising model networks at the critical temperature (Tc).
The networks became statistically indistinguishable at Tc.
The findings suggest a parallel between brain dynamics and physical critical phenomena.

Conclusions:

The human brain's resting state dynamics may operate near a critical point.
This criticality could be a fundamental property of brain function.
Further research is needed to explore the implications of brain criticality.