Fig. 1.

General computational structure of HiTEC. Codes are contained in layers at various levels, and are connected by excitatory connections. Solid lines denote fixed weights, dashed lines are connections with learned weights. Sensory codes receive modulated excitatory input from feature codes, denoted by the open arrows. Note that feature code–motor code associations are one-way connections and that feature code–task code connections are non-modulated both ways