Presynaptic tone is reduced in Npy-GFP neurons by exposure to postnatal undernutrition. (A) Representative traces from measurements of IPSCs and mIPSCs in Npy-GFP+ neurons from offspring of control litters and large litters at P30–33. (B) The mean frequency of IPSCs and mIPSCs in Npy-GFP+ neurons from offspring of control litters (CTL, black bars) vs. large litters (LL, blue bars) at P30–33. *p < 0.05, unpaired t-test. (C) Representative traces from measurements of EPSCs and mEPSCs in Npy-GFP+ neurons from offspring of control litters and large litters (LL) at P30–33. (D) The mean frequency of EPSCs and mEPSCs in Npy-GFP+ neurons from offspring of control litters (CTL, black bars, n = 9 cells, 6 animals) vs. large litters (LL, blue bars, n = 7 cells, 6 animals) at P30–33. *p < 0.05, unpaired t-test.