My 87 year old mother has recently been diagnosed with Parkinsons Disease. After a full day of activities Saturday, she had what doctors are saying a seizure and heart attack. Her system has not completely awakened. She cannot open her eyes or speak. She can be stimulated to awake and do simple commands....stick your tongue out, say uh-huh, ok. She tried to sing the abc song (garble) but the tune recognizable. We have been playing music and she hums. After visits or during long visits she goes back to sleep. I cannot find anyone who can explain this. Her doctor says be patient but she has never seen anyone do this either. Any insight or explanation would be appreciated.