p502fig13.28 Fast increments and decrements in an input S lead to slow habituation of the habituative gate, or medium-term memory, transmitter y.  The output T is a product of these fast and slow variables, and consequently exhibits overshoots, habituation, and undershoots in its response.<BR>||  Habituative transmitter gate: Input; Habituative gate d[dt: y] = A*(B - y) - S*y; Output [overshoot, habituation, undershoot]s Weber Law.