Narration is the use of a written or spoken commentary to convey a story to an audience. Narration encompasses a set of techniques through which the creator of the story presents their story, including: Narrative point of view: the perspective (or type of personal or non-personal lens) through which a story is communicated.
The types of hallucinations are: 1  Auditory: The false perception of sound, music, noises, or voices. 2  Gustatory: A false perception of taste. 3  Olfactory hallucination: A false perception of odor or smell. 4  Somatic/tactile hallucination: A false perception or sensation of touch or something happening in or on the body.
Some people abuse certain medications and substances because those items can cause hallucinations. Other substances, such as alcohol, can cause hallucinations when used in large quantities or during withdrawal. Hallucinations can be side effects of some medications and may occur with visual or hearing loss. Sleep deprivation or severe fatigue can also cause hallucinations. Hallucinations can be symptoms of serious and even life-threatening conditions.