Regensburg 2013 – scientific programme
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BP: Fachverband Biologische Physik
BP 11: Posters: Statistical Physics in Biological Systems (joint with DY)
BP 11.1: Poster
Monday, March 11, 2013, 17:30–19:30, Poster B2
Perturbed self-organized critical networks as a sleep model — li chen1 and •christian meisel1,2 — 1Max-Planck-Institut for Physik komplexer Systeme, Noethnitzer Str. 38, 01187 Dresden, Germany — 2Department of Neurology, University Clinic Carl Gustav Carus, Fetscherstr. 74, 01307 Dresden, Germany
Why do we need sleep is a long mystery for centuries. Here, we propose a perturbed self-organized critical binary networks as a possible model to mimic the whole processes for the brain during awake time and sleep. By systematically characterizing the network activity, our results shows that the input received in awake time always derivates our brains from critical state, with decreasing computational power, shorter effective response range, worse p-values etc. That is the reason why we need sleep to recover these brain functions by self-organizing back to critical networks by turning off all input from surroundings. An observation of the probability distribution of phase-lock interval from EEG data during growing sleep deprivation is given.