<prompt> A 8 year old child after a tonsillectomy sees a bear in her room . She screams in fright. A nurse who rushes in switches on the light, finds a rug wrapped on a armchair. She pacificies the child what the child experienced was a:DelusionIllusionHallucinationNone of the above  <response>: B i.e. IllusionIllusion is sensory stimulation given a false interpretation i.e it is a false perception misinterpretation bizarre interpretationmisperception of external stimuliQ. Eg. misinterpretating cord for snake or rug for bear.Most likely to occur when clarity of sensory stimulation is reduced e.g at night or eyes bandagedQ, when attention is not focused or mind is under the sway of an emotionally determined ideational set eg. anxious, frightened, vigilance for intruder, or when the level of consciousness is reduced as in delirium, or all working together. For example a frightened anxious elderly in night or with both eyes bandaged d t surgery who is vigilant for intruders is more likely to misperceive fluttering cuain as intruder or bush as a man.Illusions may also occur in hysteria, depression, schizophrenia or an emotions of great force eg abandonment or erotic yearning.Illusions may be visual, auditory eg slamming door misinterpreted as a repo of a pistol, tactile eg skin sensation thought to be caused by vermin, gustatory eg. position detected in taste of food, kinesthetic eg flying or visceral eg. abdominal pain thought to be caused by ground glass. 