Monday, November 20, 2006

11. Movement and acceleration

The 46 CA-states represent a repertoire of functions. Here we explore some which are invoked during movement. This time CA size will trigger its injury. We plant a zygote and wait until the CA matures. From then and onward, whenever the CA >=11 cells the lowest cell will be set to zero. The next CA is injured whenever its size >=13 cells, and the last, whenever its size <=19 cells.


Each injury initiates a different solution, and the CA move upward at different velocities. The smaller the CA the faster it goes. v = f[size, injury]. Suppose that the CA starts cruising at f[19,1] (1 means that only one cell was injured) . It may now accelerate its velocity by activating f[13,1], or f[11,1].

In the next image the CA started cruising upward at v=f[11,1]. At t=150 it started injuring its upper cell, leaving the lowest intact, and headed downward.

You may now examine this behavior in the following applet