Figure 1.

A, Experimental design of the study. Mice were housed in normoxic (NX) or hypoxic (HX) conditions from P3 to P11. Mice were perfused and analyzed (An) at P12, P15, P35, and P47. Upon weaning at P21, mice were either introduced into enriched environment (EN; B) or housed in standard, nonenriched (NE) conditions (C). An, time of analysis. D, Schematic of the different interneuron subpopulations identified by the different markers used in the study (adapted from Gelman and Marín, 2010). NPY, neuropeptide Y.