. Design for a brain; the origin of adaptive behavior. Calculators; Central nervous system -- Mathematical models; Behavior; Brain -- physiology. Figure 21 /8/1 : Three fields of xx and x2 when a has the values (left to right) 0, 1, and 2. When a = 0 there is a stable state of equilibrium at x1 = 0, x2 = 1; when a = 1 there is no state of equilibrium; when a = 2 there is an unstable state of equilibrium at x1 = — 2, x2 = — 1. The system has as many fields as there are values to a. Joining systems 21/9. (Again the basic concepts have been described in /. to C, S. 4/7; here we will describe the
. Design for a brain; the origin of adaptive behavior. Calculators; Central nervous system -- Mathematical models; Behavior; Brain -- physiology. Figure 21 /8/1 : Three fields of xx and x2 when a has the values (left to right) 0, 1, and 2. When a = 0 there is a stable state of equilibrium at x1 = 0, x2 = 1; when a = 1 there is no state of equilibrium; when a = 2 there is an unstable state of equilibrium at x1 = — 2, x2 = — 1. The system has as many fields as there are values to a. Joining systems 21/9. (Again the basic concepts have been described in /. to C, S. 4/7; here we will describe the theory in continuous systems.) The simple physical act of joining two machines has, of course, a counterpart in the equations, shown more simply in the canonical than in the equations of S. 19/7. One could, of course, simply write down equations in all the variables and then simply let some parameter a have one value when the parts are joined and another when they are separated. This method, however, gives no insight into the real events in 4 joining ' two systems. A better method is to make the para- meters of one system into defined functions of the variables of the other. When this is done, the second dominates the first. If parameters in each are made functions of variables in the other, 266. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ashby, William Ross. New York, Wiley
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