My feeling is it has not been proven either way. PVS is not the same as a coma. People in persistent vegative states do have periods of sleep and wakefulness. "Spontaneous movements may occur and the eyes may open in response to external stimuli, but the patient does not speak or obey commands. Patients in a vegetative state may appear somewhat normal. They may occasionally grimace, cry, or laugh. "
Now I don't know if Terri is in a PVS or not, and the videos, while heartwrenching, don't have anything that seem to disprove a PVS diagnosis. THIS DOES NOT MEAN I THINK SHE IS IN A PVS! Only that the videos don't seem to disprove it.
http://www.terrisfight.org
I especially like the music video where she smiles when they play a tape of piano music. The audios are SUPER and are definitely her trying to say " YES"....