The AP reports:

Doctors treating Arizona Rep. Gabrielle Giffords said Monday the congresswoman was responding to verbal commands by raising two fingers of her left hand and even managed to give a thumbs-up. Giffords, 40, is in critical condition in the intensive care unit of Tucson's University Medical Center after she was shot through the head Saturday during a meet-and-greet with voters outside a supermarket. Two patients were discharged Sunday night. Eight others, including Giffords, remained hospitalized. Recent CAT scans showed no further swelling in the brain, but doctors were guarded.