Hallucinations

Research output: Contribution to journalArticle

Abstract

Hallucinations, sensory perceptions without environmental stimuli, occur as simple experiences of auditory, gustatory, olfactory, tactile, or visual phenomena as well as mixed or complex experiences of more than one simple phenomenon. The nature of the hallucination assists localization, differential diagnosis, and treatment planning. In particular, the presence of persistent visual hallucinations of persons with Parkinson's disease predicts dementia, rapid deterioration, permanent nursing home placement, and death. Hallucinations in persons with Alzheimer's disease are often associated with serious behavioral problems and predict a rapid cognitive decline. Theories of the etiology of hallucinations include (1) stimulation, e.g., neurochemical, electrical, seizure, and ephaptic, and (2) inhibition, e.g., destruction of normally inhibitory functions, resulting in disinhibition as in the Charles Bonnet and phantom limb syndromes. Functional neuroimaging procedures suggest anatomical associations for hallucinations. While hallucinations may be a symptom of medical, neurologic, and psychiatric disorders, they may also occur in a wide range of human experiences.

Original languageEnglish (US)
Pages (from-to)851-877
Number of pages27
JournalPerceptual and Motor Skills
Volume86
Issue number3 PART 1
StatePublished - 1998
Externally publishedYes

Fingerprint

Hallucinations
Phantom Limb
Functional Neuroimaging
Touch
Nursing Homes
Nervous System Diseases
Parkinson Disease
Psychiatry
Dementia
Alzheimer Disease
Seizures
Differential Diagnosis

ASJC Scopus subject areas

  • Psychology(all)
  • Experimental and Cognitive Psychology

Cite this

Brasic, J. R. (1998). Hallucinations. Perceptual and Motor Skills, 86(3 PART 1), 851-877.

Hallucinations. / Brasic, James R.

In: Perceptual and Motor Skills, Vol. 86, No. 3 PART 1, 1998, p. 851-877.

Research output: Contribution to journalArticle

Brasic, JR 1998, 'Hallucinations', Perceptual and Motor Skills, vol. 86, no. 3 PART 1, pp. 851-877.
Brasic, James R. / Hallucinations. In: Perceptual and Motor Skills. 1998 ; Vol. 86, No. 3 PART 1. pp. 851-877.
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