Summary diagram of the axonal projections from nociceptive specific (gray) and nociceptive nonspecific plus tactile (small dots) PoT neurons. From caudal to rostral, coronal levels of A and B are interaural 6.70 and 7.70 mm (Paxinos and Watson, 1998). Abbreviations are listed in Figure 1 legend. Scale bar, 1 mm.