Abstract
Many complex systems display self-organized critical states characterized by frequency scaling of power spectra. Global variables such as the electroencephalogram, scale as , which could be the sign of self-organized critical states in neuronal activity. By analyzing simultaneous recordings of global and neuronal activities, we confirm the scaling of global variables for selected frequency bands, but show that neuronal activity is not consistent with critical states. We propose a model of scaling which does not rely on critical states, and which is testable experimentally.
- Received 27 March 2006
DOI:https://doi.org/10.1103/PhysRevLett.97.118102
©2006 American Physical Society