Nociceptive specific PoT neuron 38B. A1, A2, Response to innocuous tactile (T) and noxious pinch (P) stimuli. B1-B5, Response to graded thermal stimuli (2°C steps) from innocuous to strongly noxious temperature (44-52°C). Mechanical and thermal stimuli were applied for 20 sec (bars) to the receptive field (asterisk). C, Receptive field including portions inducing high (black) and moderate (gray) firing of neuron.