Fig. 10.

Recording locations of each neuron for which a recording point lesion was recovered (n = 92). A: recording points located throughout the first and second cervical segments of the spinal cord. B: recording points located in the medulla, at and rostral to the level of the pyramidal decussation. In A and B, red dashed line indicates area in i, which has been expanded in ii and iii. Cells responsive to each pruritogen or partial pruritogen are indicated by color code; cells tested with a chemical but not responding to that chemical have a white section in the space corresponding to that chemical; cells not tested with a chemical have a black section in the space corresponding to that chemical (see legend).