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Fig. 5.26. LISSOM model of orientation, ocular dominance, and direction selectivity. The architecture is a combination of the LISSOM OD network of Figure 5.14 and the DR network of Figure 5.20. For each input movie, one retina is chosen randomly to be dimmer than the other. The frames are then drawn on the retina one timestep at a time, and propagated to the LGN sheets with the appropriate lag. The V1 neurons receive input from all 16 LGN sheets simultaneously, and settle the activation through lateral connections as usual in LISSOM.