Figure 6.

Adaptation of slow and fast response components. Shock trains, 0.5-s duration, 333 shocks/s are repeated every 1.5 s. There are a total of 50 trains. Rates are calculated during each train (T₁, dark bar in inset to B) and in the 0.5 s immediately preceding period (T₀). The slow response builds up with successive trains. The fast response is measured as the difference in rates between T₁ and the immediately preceding T₀ (shaded areas). A A noncalyx HC unit (cv^* = 0.16), ipsilateral stimulation. The slow response continues to increase during the paradigm, while the fast response declines from 52 to 34 spikes/s. B A calyx SC unit (cv^* = 0.25), midline stimulation. The slow response declines from 57 to 39 spikes/s; the fast response declines from 47 to 40 spikes/s.