They then videotaped the subjects as they slept. Lying in bed, eyes closed, one female patient on the tape performs the dance moves she learned earlier.

When nurses once placed the cat on the bed of a patient they thought close to death, Oscar "charged out" and went to sit beside someone in another room.

The slightest motion of a patient in bed creates friction between skin and sheets and results in loss of cells from the skin's outermost layer.