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Stimulation and recording sites. A, PAG stimulation sites. The most caudal section is shown on theleft and the most rostral on the right.B, Pontomedullary recording sites forserotonergic (asterisks) andserotonergic-like (filled circles) cells. The rostrocaudal location of each section is shown on the bottom right. n. VII, Facial nucleus; NRMCα, nucleus reticularis magnocellularis pars α; NRMCβ, nucleus reticularis magnocellularis pars β; p, pyramid; RM, raphe magnus;tb, trapezoid body.
