hallucination

perception in the presence of no external stimuli found, but characteristic of true perception
Thing symptom_or_sign Q130741
hallucination
August Natterer · Public Domain · Wikimedia
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Summary

hallucination is a symptom or sign[1]. hallucination ranks in the top 7% of symptom or sign entities by monthly Wikipedia readership (7,518 views/month).[2]

Key Facts

  • Subclass of: psychopathological symptom[3], disruption[4], perceptual distortion[5], general symptom[6]
  • Part of: fantasy[7]
  • Commons category: Hallucination[8]
  • Topic's main category: Category:Hallucinations[9]
  • Described by source: Brockhaus and Efron Encyclopedic Dictionary[10], Small Brockhaus and Efron Encyclopedic Dictionary[11], Encyclopædia Britannica 11th edition[12], Great Soviet Encyclopedia (1926–1947)[13]
  • NCI Thesaurus ID: C37961[14]
  • Different from: illusion[15], imagination[16], delusion[17]
  • Health specialty: psychiatry[18], medical psychology[19], psychotherapy[20]
  • Exact match: http://purl.obolibrary.org/obo/HP_0000738[21], http://purl.obolibrary.org/obo/SYMP_0000607[22]
  • On focus list of Wikimedia project: Wikipedia:Vital articles/Level/4[23]
  • Does not have characteristic: control[24]

Body

Influence

Things named for hallucination include Smyslovye Gallyutsinatsii[25], a musical group[26], in Soviet Union[27], founded in 1989[28].

Why It Matters

hallucination has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[29] hallucination is known by 74 alternative names across languages and contexts.[30]

Entities named for hallucination include Smyslovye Gallyutsinatsii[25], a musical group[26], in Soviet Union[27], founded in 1989[28].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . Symptom Ontology. Retrieved . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.
  16. [18] ↑ . wikidata.org.
  17. [19] ↑ . wikidata.org.
  18. [20] ↑ . wikidata.org.
  19. [21] ↑ . Human Phenotype Ontology release 2018-03-08. Retrieved . wikidata.org.
  20. [22] ↑ . Symptom Ontology. Retrieved . wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [25] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [26] ↑ . Wikidata. wikidata.org. → on this site
  2. [27] ↑ . Wikidata. wikidata.org. → on this site
  3. [28] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [29] ↑ . Wikidata sitelinks. wikidata.org.
  3. [30] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). hallucination. Retrieved October 17, 2026, from https://4ort.xyz/entity/hallucination-q130741
MLA “hallucination.” 4ort.xyz Knowledge Graph, 4ort.xyz, 17 Oct. 2026, https://4ort.xyz/entity/hallucination-q130741.
BibTeX @misc{4ortxyz_hallucination-q130741_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{hallucination}}, year = {2026}, url = {https://4ort.xyz/entity/hallucination-q130741}, note = {Accessed: 2026-10-17}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): hallucination — https://4ort.xyz/entity/hallucination-q130741 (retrieved 2026-10-17)

Canonical URL: https://4ort.xyz/entity/hallucination-q130741 · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 18w ago · Jindřich Rubeš · 2026-06-12 view diff on Wikidata ↗
    Svkkl authority id → 0279905-halucinace
    "/* wbcreateclaim-create:1| */ Svkkl authority id: 0279905-halucinace, [[:toollabs:quickstatements/#/batch/259492|batch #259492]]"
  2. 22w ago · Horcrux · 2026-05-15 view diff on Wikidata ↗
    Cicap encyclopedia id → 100248
    "/* wbsetclaim-create:2||1 */ Cicap encyclopedia id: 100248"
  3. 22w ago · Kylespaski · 2026-05-14 view diff on Wikidata ↗
    Local thumb → —
    "/* wbeditentity-update-languages-short:0||es, pt */"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.