Breathing Spots in a Reaction-Diffusion System
  A quasi-2-dimensional stationary spot in a disk-shaped chemical reactor is observed to bifurcate to an oscillating spot when a control parameter is increased beyond a critical value. Further increase of the control parameter leads to the collapse and disappearance of the spot. Analysis of a bistable activator-inhibitor model indicates that the observed behavior is a consequence of interaction of the front with the boundary near a parity breaking front bifurcation. 
D. Haim (1), G. Li (1), Q. Ouyang (1), W.D. McCormick (1), Harry L.   Swinney (1), A. Hagberg (2), and E. Meron (3) ((1) The...