NPY and Anxiety: To investigate whether NPY alters anxiety-like behavior when administered into the DH, DLS, CeA, MeA and/or BLA, mice were administered either Veh (0.2 μL/side) or NPY (0.1 nmol/0.2 μL/side) into these brain regions 10 min before they were tested on the elevated plus-maze (EPM).