a, Top, schematic behavioral assay of sucrose preference test (SPT). Bottom, percentage sucrose water consumption. Sham vs HW, ***P = 0.0004, NHW vs HW, **P = 0.0048, Sham vs NHW, N.S., P = 0.6103, two-tailed one-way ANOVA with postdoc hoc test, n = 9 mice in each group. b, Immobility time in tail suspension test (TST). Sham vs HW, **P = 0.003, NHW vs HW, **P = 0.0028, Sham vs NHW, N.S., P = 0.9997, two-tailed one-way ANOVA with postdoc hoc test, n = 9 mice in each group. c, Immobility time in forced swimming test (FST). Sham vs HW, **P = 0.0012, NHW vs HW, **P = 0.0048, N.S., P =0.8448, two-tailed one-way ANOVA with postdoc hoc test, n = 9 mice in each group. d, Percentage time spent in open arms in the elevated plus maze (EPM). ****P < 0.0001, N.S., P = 0.8923, two-tailed one-way ANOVA with postdoc hoc test, n = 9 mice in each group. e, Percentage time spent in the center in the open field test (OFT). ***P = 0.0001, ****P < 0.0001, N.S., P = 0.9562, two-tailed one-way ANOVA with postdoc hoc test, n = 9 mice in each group. f, Time of pup grooming. Sham vs HW, **P = 0.0036, NHW vs HW, **P = 0.0016, N.S., P = 0.9434, two-tailed one-way ANOVA with postdoc hoc test, n = 9 mice in each group. g, Social preference index in the three-chamber sociability test. ***P = 0.0006, ****P < 0.0001, N.S., P = 0.6586, one-way ANOVA with postdoc hoc test, n = 9 mice in each group. Data are presented as mean values +/− s.d.. h, Chemogenetic suppression of MPOA Vgat+ neurons by injecting AAV-DIO-hM4Di (or DIO-mCherry as control) in normal Vgat-Cre male animals. i-o, Various behavioral tests. Statistics: **P = 0.0024 (i), ****P < 0.0001 (j), **P = 0.0015 (k), **P = 0.0002 (l), ****P < 0.0001 (m), N.S., P = 0.8111 (n), **P = 0.0085 (o), two-tailed Mann-Whitney test, n = 9 mice in each group, mean ± s.d...