Number and percentage of single and double-labeled neurons for c-FOS and the specific markers of the different waking systems after NaCl or muscimol injections in the DPGi.

Each value represents a mean ± SEM number of neurons per structure per side of the brain (n = 4 animals per group). The percentages displayed correspond to the number of double-labeled neurons versus the total number of neurons labeled with the marker of a given waking system. The number of sections counted for each structure is indicated in the column n. For each comparison the p value after Mann-Whitney U test is given in the column p. *pAbbreviations: DR, dorsal raphe nucleus; HDB, nucleus of the horizontal limb of the diagonal band; LDTg, laterodorsal tegmental nucleus; MCPO, magnocellular preoptic nucleus; MnR, median raphe nucleus; MS, medial septal nucleus; PPTg, pedunculopontine tegmental nucleus; RMg, nucleus raphe magnus; ROb, nucleus raphe obscurus; RPa, nucleus raphe pallidus; TMN, tuberomammillary nucleus, ventral part.