My father (80) had a laminectomy 12/23/03 on C4,C5,C6 for compression of the spinal cord due to arthritis. He was nearly quadriplegic. He has had some therapy at the hospital and two nursing homes, but none was extensive. He had hallucinations shortly after beginning therapy at one nursing home, but we attributed it to xanax withdrawal. He has been at home for two weeks, with no further episodes, until he began an intensive therapy program four days ago, and is showing physical improvement. Are episodes of hallucinations to be expected with recovery from this surgery? He is not on any medication.