TIME (s) FIG. 1. Changes in the responses of a primate STT cell to mechanical stimuli due to cuta- neous injury. Drawing at top shows the sites stimulated and the boundary of the receptive field (r.f.) before and after injury. The responses in A were recorded before injury and those in B after. The histograms in the left column show the responses to innocuous brushing at undam- aged sites V to Z. The histograms in the right column show the responses to graded intensities of mechanical stimulation applied to site I (BR, brushing; PR, pressure; PI, pinch; So, squeeze). The SO stimulus caused skin damage, and the entire sequence was repeated 10 times. (From ref. 68.) Click here to see the graphic at a different resolution