The Critical Brain

v10.0 · 16,384 Izhikevich neurons · self-organised criticality · neuronal avalanches

Dynamical regime

CRITICAL

LIVEFPS 60spk/s 0

Control parameter · synaptic gain g — anaesthesia ↓ · edge of chaos · seizure ↑

σ = 1.00 · g = 0.46

Subcritical · anaesthesiaCritical · waking cortexSupercritical · seizure

cortex 128×128 · 16,384 units
model Izhikevich · 80/20 E·I
branching σ 1.00

avalanches 0
τ size —
α duration —

rate 0.0/ms · active 0.0% · largest 0

Living cortical sheet · spike-density field

INSTANTIATING 16,384 IZHIKEVICH NEURONS
WIRING EXCITATORY–INHIBITORY FIELDS

population rate

—

branching σ(t)

—

active fraction

—

avalanche size

—

Regime presetsets gain g

E / I balance4.0

Background σ0.55

Perturbseed an avalanche