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Models with Activation and Inhibition

Birgit Schönfisch presented an investigation of different
models with activation and inhibition and discussed the different
parameters in these models. Her models
are all asynchronous. Here I present a synchronous version, where each
cell is updated only with probability 0.1, which leads to results which
seem to be almost identical to the asynchronous model in this case. The first
model is described in CDL in the file schoen.cdl,
and here the parameters are 2 for the activation threshold and 2 for the
inhibition threshold.

A similar model can also be programmed for the hexagonal case. In this
case the CA is programmed in Java in the file schoen3.java
, and the activation threshold is 2 (out of 6 cells) and the inhibition
threshold is 4 (out of 6 more cells). The neighborhood consists of the
12 nearest neighbors of a cell (called generalized vonNeumann neighborhood
in the JCASim system).

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J.Weimar@tu-bs.de 9.10.2000, modified 1.11.2000