Figure 3.
Microdialysis sites were localized to the pontine reticular formation, oral part (PnO). The vertical cascade of coronal sections shows the location of each microdialysis probe. Probe membranes are denoted by shaded cylinders and are drawn to scale. The digitized image of a cresyl-violet-stained section shows a typical microdialysis probe tract. The arrow points to the most ventral portion of the dialysis site. The coronal diagrams were modified from a rat brain atlas,39 and numbers at the right of each diagram indicate mm from bregma.