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. Author manuscript; available in PMC: 2012 Dec 1.
Published in final edited form as: Neuroscience. 2011 Sep 12;197:293–306. doi: 10.1016/j.neuroscience.2011.09.002

Figure 6. Accounting for multiple fields in single environment.

Figure 6

A, Example of firing rate map, in which the feedforward network was set up to generate place fields in the locations marked by three black dots. The activation map shown here was generated with hand-wired weights. B, The weights (N=600) are colored green, blue and magenta to separate them visually, but are indistinguishable in the simulations. Each set of weights were chosen so that they generate an activation peak in one of the desired locations. Relative to this location the other two sets of weight appear to be noise, thus contributing only a homogenous background to the activation. C, Summary for 2 (blue), 3 (green), 4 (red), 5 (cyan), and 6 (magenta) place field locations. Even small networks can support multiple place fields.