. Design for a brain; the origin of adaptive behavior. Calculators; Central nervous system -- Mathematical models; Behavior; Brain -- physiology. 2/12 DYNAMIC SYSTEMS Sometimes a line of behaviour can be specified in terms of elementary mathematical functions. Such a simplicity is con- venient when it occurs, but is rarer in practice than an acquaintance with elementary mathematics would suggest. With biological material it is rare. r*~\ imimA0~%iwMJi â ;. Time â*- Figure 2/12/1 : Events during an experiment on a conditioned reflex in a sheep. Attached to the left foreleg is an electrode by wh
. Design for a brain; the origin of adaptive behavior. Calculators; Central nervous system -- Mathematical models; Behavior; Brain -- physiology. 2/12 DYNAMIC SYSTEMS Sometimes a line of behaviour can be specified in terms of elementary mathematical functions. Such a simplicity is con- venient when it occurs, but is rarer in practice than an acquaintance with elementary mathematics would suggest. With biological material it is rare. r*~\ imimA0~%iwMJi â ;. Time â*- Figure 2/12/1 : Events during an experiment on a conditioned reflex in a sheep. Attached to the left foreleg is an electrode by which a shock can be administered. Line A records the position of the left forefoot. Line B records the sheep's respiratory movements. Line C records by a rise (E) the application of the conditional stimulus : the sound of a buzzer. Line D records by a vertical stroke (F) the application of the electric shock. (After Liddell et al.) Another form is the tabular, of which an example is Table 2/12/1. Each column defines one state; the whole table defines one line of behaviour (other tables may contain more than one line of behaviour). The state at 0 hours is the initial state. Time (hours) 0 1 3 6 W 7-35 7-26 7-28 7-29 u x> X 156-7 154-6 1541 151-5 c8 03 y 110-3 116-7 118-3 118-5 > z 222 153 150 14-6 Table 2/12/1 : Blood changes after a dose of ammonium chloride, w = serum pH ; x = serum total base ; y = serum chloride ; z = serum bicarbonate ; (the last three in m. eq. per 1.). 21. 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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