"Phase portrait of the high-dimensional olfactory dynamics is
shown in two representative dimensions of the output of a
KOe set and a KOi set with
one KII set. Elevation is proportional to amplitude."
W. J. Freeman
Simulation of Chaotic EEG Patterns witha Dynamic Model of the
Olfactory System
Biological Cybernetics. vol.56, pp.139-150, p.146. 1987.