Hallucinations is a perception in the absence of a stimulus. In a stricter sense, hallucinations are defined as perceptions in a conscious and awake state in the absence of external stimuli which have qualities of real perception, in that they are vivid, substantial, and located in external objective space. The latter definition distinguishes hallucinations from the related phenomena of dreaming, which does not involve consciousness; illusion, which involves distorted or misinterpreted real perception; imagery, which does not mimic real perception and is under voluntary control; and pseudohallucination, which does not mimic real perception, but is not under voluntary control. Hallucinations also differ from "delusional perceptions", in which a correctly sensed and interpreted genuine perception is given some additional (and typically bizarre) significance.
Hallucinations classification as follows :
- Hear Hallucination (acoustic, auditorik), the patients and their voice heard, mocking, ridicule, threaten, or when there is no noise.
- See Hallucination (visual), the patient's view of the people, animals or things that do not exist.
- Smell Hallucination (olfaktori). This hallucination rarely get on. Patients who have experienced the smell like flowers, incense smell, the smell dead bodies, that is not the source.
- Soy sauce Hallucination (gustatorik). Usually occurs along with odor hallucination . Patients feel the (sample) in the sense of a mouth.
- Tactile hallucinations (taktil, kinaestatik). Other types of hallucinations create the sensation of tactile sensory input, simulating various types of pressure to the skin or other organs. This type of hallucination is often associated with substance use, such as someone who feels bugs crawling on them (known as formication) after a prolonged period of cocaine or amphetamine use.
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