We processed mouse brains and cut 10-μm-thick coronal sections for immunohistochemistry as described previously (13 (link)), using phospho (p)-Akt (catalog #4060; Cell Signaling Technology), pStat3 (catalog #9131; Cell Signaling Technology), protein S6 (pS6) antibodies (catalog #4858; Cell Signaling Technology), and cFos antibody (catalog #2250; Cell Signaling Technology).