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Fig. 4. Peristimulus time histograms and electrophysiological traces showing
responses from the star-nosed mole. (A) The receptive field (RF) for each cell
is presented on a schematic of the mole's nose. (BG) Three classes of
receptor were evident, showing the following responses: (DF)
Merkel-like response; (C,G) Pacinian-like response; (B) an RA response to the
onset of compression. This receptor was also directional. An arrow on the RF
diagram shows the preferred direction. Imp, impulses.