(A) Layer 5 mPFC pyramidal neurons from animals administered a single dose of 5-MeO (10 mg/kg, IP) 24 h prior to tissue collection showed no significant difference in action potential firing rates in response to depolarizing current injection (n = 75 neurons, 6 animals per group) compared to neurons from animals that were given saline (n = 87 neurons, 6 animals per group). (B) Sample traces of neurons from animals treated with vehicle (black) and 5-MeO (red) in response to +200, +100, 0, −100, and −200 pA current injections (scale bars: 200 ms, 20 mV). (C) Resting membrane potential (RMP) was significantly more depolarized in animals treated with 5-MeO (p = 0.020), but all other intrinsic cellular properties were largely unchanged by the drug treatment. Data represent mean ± SEM. *p < 0.05, Student’s t-test.