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EEG Attractor for Olfactory Bulb of Resting Rat
"2D slice of 3D representation of 4-second epoch of EEG from the olfactory system of the brain of a rat, awake but resting motionless. The trajectory of a point moving through this space in time traces the subspace that is occupied by a strange attractor. We have colored it red when the fourth variable is negative and blue-white when it is positive. The Hausdorff dimension is 5.92 and we are unable to find geometric order."

Walter J. Freeman
Freeman: Strange Attractors that Govern Mammalian Brain Dynamics
IEEE Transactions on Circuits and Systems, Vol. 35, No. 7, July 1988