Click on each figure to get the postscript version



Figure 1: Trail formation. A: shows the swarm at time 29, when the field is still mostly random. B: at t=208 C: at t=332, the network has initially formed, D: at t=412. E: at t=785, where some branches have disappeared. F: at t=1753, shows the final network that emerges.



Figure 2:
Physiological phase plot: A snapshot of the particles' positions at the last two iterations after 1000 time steps starting from a random initial distribution of agents for each and value indicated on the axis. The circles joined by a line is the mean field prediction of a second order phase transition given by Eq. 7. The dashed line is the approximate location of the transition between trails and patches. .



Figure 3:
Memory erasure and reconsolidation. A: The original pattern. B: is turned back up after 250 time steps; the trail re-forms completely. C: is turned back up after 265 steps; only a portion of the trail remains. D: is turned back up after 275 steps. E: is turned back up after 300 steps. F: is turned back up after 375 steps.




Figure 4:
The ``bootstrapping" effect. The Plot shows the onset the effect of the introduction of a bootsrapping trail. Plot A shows the random configuration of the ants before the trail is added. B: shows the swarm in the short period of amplifying this weak trail. C: the final state.



Erik Rauch
Wed Jul 19 11:44:00 MDT 1995