. Design for a brain; the origin of adaptive behavior. Calculators; Central nervous system -- Mathematical models; Behavior; Brain -- physiology. —TIME—*- Figure 7/18/1 : Diagram of the changes in x, volume of urine in the bladder, and y, activity in the centre for micturition, when automatic action has been established after spinal section. a certain value, the centre becomes inactive and the bladder refills. A graph of the two variables would resemble Figure 7/18/1. The two-variable system is state-determined, for it has the field of Figure 7/18/2. The variable y is approximately a step-func
. Design for a brain; the origin of adaptive behavior. Calculators; Central nervous system -- Mathematical models; Behavior; Brain -- physiology. —TIME—*- Figure 7/18/1 : Diagram of the changes in x, volume of urine in the bladder, and y, activity in the centre for micturition, when automatic action has been established after spinal section. a certain value, the centre becomes inactive and the bladder refills. A graph of the two variables would resemble Figure 7/18/1. The two-variable system is state-determined, for it has the field of Figure 7/18/2. The variable y is approximately a o x, x2 Figure 7/18/2 : Field of the changes shown in Figure 7/18/1. When it is at 0, its critical state is x = X2, y = 0, for the occur- rence of this state determines a jump from 0 to Y. When it is at Y, its critical state is x = Xlt y = Y, for the occurrence of this state determines a jump from Y to 0. 7/19. A common, though despised, property of every machine is that it may ' break ', This event is in no sense unnatural, since it must follow the basic laws of physics and chemistry and is therefore predictable from its immediately preceding state. In general, when a machine ' breaks ' the representative point has met some critical state, and the corresponding step-function has changed value. As is well known, almost any machine or physical system will 92. 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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Keywords: ., bookcentury1900, bookpublishernewyorkwiley, booksubjectcalculato
