Hallucination


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Related to Hallucination: auditory hallucination, visual hallucination

hallucination

 [hah-loo″sĭ-na´shun]
a sensory impression (sight, touch, sound, smell, or taste) that has no basis in external stimulation. Hallucinations can have psychologic causes, as in mental illness, or they can result from drugs, alcohol, organic illnesses, such as brain tumor or senility, or exhaustion. When hallucinations have a psychologic origin, they usually represent a disguised form of a repressed conflict. adj. adj hallu´cinative, hallu´cinatory.
auditory hallucination a hallucination of hearing; the most common type.
gustatory hallucination a hallucination of taste.
haptic hallucination tactile hallucination.
hypnagogic hallucination a vivid, dreamlike hallucination occurring at sleep onset.
hypnopompic hallucination a vivid, dreamlike hallucination occurring on awakening.
kinesthetic hallucination a hallucination involving the sense of bodily movement.
olfactory hallucination a hallucination of smell.
somatic hallucination a hallucination involving the perception of a physical experience occurring within the body.
tactile hallucination a hallucination of touch.
visual hallucination a hallucination of sight.

hal·lu·ci·na·tion

(ha-lū-si-nā'shŭn), Do not confuse this word with delusion or illusion.
The apparent, often strong subjective perception of an external object or event when no such stimulus or situation is present; may be visual, auditory, olfactory, gustatory, or tactile.
[L. alucinor, to wander in mind]

hallucination

(hə-lo͞o′sə-nā′shən)
n.
1.
a. Perception of visual, auditory, tactile, olfactory, or gustatory stimuli in the absence of any external objects or events and with a compelling sense of their reality, resulting from certain mental and physical disorders or as a response to a drug.
b. The objects or events so perceived.
2. A false or mistaken idea.

hal·lu′ci·na′tion·al, hal·lu′ci·na′tive adj.
A complex sensory perception that occurs without external stimulation, which is characterised by false or distorted perception of objects or events—e.g., sights, sounds, tastes, smells, or sensations of touch—often accompanied by a powerful sense of reality

hallucination

Neurology A complex sensory perception that occurs without external stimulation, characterized by false or distorted perception of objects or events–eg, sights, sounds, tastes, smells, or sensations of touch, often accompanied by a powerful sense of reality. See Command, Functional, Hypnogenic, Hypnopompic, Olfactory hallucination. Cf Illusion, Schizophrenia.

hal·lu·ci·na·tion

(hă-lū'si-nā'shŭn)
The subjective perception of an object or event when no such stimulus or situation is present; may be visual, auditory, olfactory, gustatory, or tactile.
[L. alucinor, to wander in mind]

hallucination

A sense perception in the absence of an external cause. Hallucinations may involve sights (visual hallucinations), sounds (auditory), smells (olfactory), tastes (gustatory), touch (tactile) or size (dimensional). Hallucinations should be distinguished from delusions-which are mistaken ideas.

Hallucination

A sensory experience of something that does not exist outside the mind. A person can experience a hallucination in any of the five senses. Auditory hallucinations are a common symptom of schizophrenia.

hal·lu·ci·na·tion

(hă-lū'si-nā'shŭn) Do not confuse this word with delusion or illusion.
Apparent, often strong subjective perception of an external object or event when no such stimulus or situation is present.
[L. alucinor, to wander in mind]

Patient discussion about Hallucination

Q. Give life to her please! Here is a really confusing question to you all. But your reply is a life for her. I know someone who is bipolar and she thinks that her ‘brother’ sexually molested her when they were kids. Can this be a delusion? Or hallucinating?

A. Im going to answer this question a little different;What if she is telling the truth,and her brother is planning on no body believing her? because she has this disease?---keep that in mind when you take her to the DR--mrfoot56

More discussions about Hallucination
References in periodicals archive ?
We did not find a correlation between the ReHo value of the left precuneus and the severity of auditory hallucinations in the AVH patients.
Effects of augmentative transcaranial magnetic stimulation on Auditory hallucination :randomized control study.
Kalhovde, Elstad, and Talseth (2013) interviewed 14 people with psychotic disorders who experienced auditory hallucinations. Many participants reported that constantly hearing voices in the background made daily life more difficult.
He said, "Let me make it very clear that these hallucinations will continue especially with those people whose power has been taken away.For us, the Prime Minister the constitution is of immense importance," he added.
He denied any prior hallucinations and had insight that the car was not real.
The study is the first large-scale randomized controlled trial of this type of therapy, and was used in people with schizophrenia who had had persistent and distressing auditory hallucinations for more than a year, despite treatment.
An auditory hallucination is then thought to be the result of hyper-excitation of the bottom-up system, such that neurons in this region spontaneously fire in the absence of a triggering external stimulus, and hypoexcitation of the top-down system, such that attention is not regulated appropriately to an external event and internal events are not correspondingly inhibited or suppressed.
He was fearful and had delusion of persecution and Autoscopic and Lilliput hallucination saying he had never experienced these before.
With regard to the clinical definition of the main features of psychosis, which include hallucinations, illusions, and delusions, current ICD10 guidelines define hallucinations as a disorder characterised by a false sensory perception in the absence of an external stimulus, whereas an illusion is regarded as a misperception of an externally present stimulus.
The search keywords were: ("Transcranial direct current stimulation" or "tDCS" or "Transcranial direct current stimulus" or "Transcranial Electrical Stimulation") and ("Auditory Hallucination" or "Auditory Hallucinations" or "Verbal Auditory Hallucination", "phonism" or "voice*" ).
The risk for relapse was particularly high when the hallucinations were primarily auditory, Dr.
In 2011, aged 15, the citizen began showing signs of a particular type of mental illness, which led to him "conversing with himself and showing signs of auditory and visual hallucinations", according to the Public Prosecution.