1. Adaptation of tactile receptors in the skin of the frog to excitation by an intermittent jet of air is measured and correlated with certain properties of a series of notched discs used to interrupt the air stream.
2. Adaptation in fifteen cases is found to be described by either one of two empirical formulas,
or
t = -k log f + C, for nine preparations
t = a f-b, for six preparations
where f is the per cent frequency at time t and -k and -b are constants defining the rate of adaptation.
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Copyright, 1933, by The Rockefeller Institute for Medical Research
1933
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