Activated GABAergic neurons in the vlPAG/DpMe region after paradoxical sleep deprivation and hypersomnia (Fos immunohistochemistry combined with GAD67 mRNA in situ hybridization).
Schematic distribution of Fos+ (small black dots) and Fos-GAD (large red dots) neurons in the vlPAG/dDpMe region in PSD (A) and PSR (B) animals (sections −7.40 from Bregma). Double-labeled neurons in the vlPAG are more abundant in the lateral and ventral portions of the vlPAG in the PSD animal and in its medial part in the PSR animal.