hallucination
/həˌluːsɪˈneɪʃn/ (bre, ipa) · /həˌluːsɪˈneɪʃn/ (ame, ipa) · /hə-ˌlü-sə-ˈnā-shən/ (ame, mw)
hallucination — 名詞
- hallucinationsingular
- hallucinationsplural
1. a sensory event during which a person sees, hears, feels, or smells things with
幻覺
因疾病或藥物產生不實感官經驗
a sensory event during which a person sees, hears, feels, or smells things with no basis in external reality, typically triggered by a medical condition, mental illness, a high fever, or drug use
Ritu experienced vivid auditory hallucinations after developing a high fever.
Ritu 在高燒後出現了清晰的聽覺幻覺。
auditory / visual / olfactory hallucination — specifying the sensory type
Layla had visual hallucinations of people not there while awake for two weeks.
Layla 在連續兩週沒睡的情況下，出現了看到不存在的人的視覺幻覺。
The doctors confirmed that the hallucinations were caused by a reaction to the new medication.
醫生確認這些幻覺是由於新藥物的反應所引起的。
Yan's grandfather was diagnosed with a condition that triggers frequent olfactory hallucinations.
Yan 的祖父被診斷出一種會經常觸發嗅覺幻覺的疾病。
After the surgery, Théo mentioned that the hallucinations had completely stopped.
手術後，Théo 說那些幻覺已經完全消失了。
- delusion
A delusion is a fixed false belief (e.g., thinking you are famous), not a sensory experience. Delusions involve thoughts, not senses.
- mirage
A mirage is a visual illusion caused by atmospheric conditions (e.g., water on a hot road), not a medical symptom.
- apparition
Apparition suggests a ghostly or supernatural vision, whereas hallucination is a medical or neurological term.
用法筆記
Often modified by a sensory adjective (auditory, visual, olfactory, tactile) to specify which sense is affected. The uncountable form (e.g., 'suffers from hallucination') is less common than the countable form ('had hallucinations').
常見錯誤
2. the specific thing that someone sees, hears, or feels during a hallucination, ev
幻象
幻覺中感知到的虛假事物
the specific thing that someone sees, hears, or feels during a hallucination, even though it has no real existence outside their own mind
One hallucination Dewi reported was a large spider crawling across her shoulder.
Dewi 回報的一個幻象是一隻大蜘蛛爬過她的肩膀。
hallucination of + [noun] — describing the perceived object
Eli kept insisting the person in the corner of the room was not a hallucination.
Eli 堅持說他在房間角落看到的那個人不是幻象。
The hallucination of a burning smell made the nurses check every room for a fire.
關於燒焦味的幻覺讓護士檢查了每個房間是否有火災。
Rodrigo described the hallucination as a bright light that cast shadows on the wall.
Rodrigo 描述那個幻象是一道在牆上投下陰影的亮光。
文法句型
hallucination of + noun
用法筆記
Use this sense when referring to what the person actually perceived (the content of the hallucination), as opposed to the experience itself. Typically takes an 'of'-phrase (e.g., 'a hallucination of a face').
3. an incorrect statement or fabricated detail that an artificial intelligence syst
幻覺資訊
AI系統產生的虛假錯誤內容
an incorrect statement or fabricated detail that an artificial intelligence system creates and presents as if it were reliable, often sounding convincing despite being untrue
The chatbot produced a hallucination when it claimed a famous scientist was still alive.
聊天機器人聲稱一位知名科學家還在世，這就是它產生的幻覺資訊。
AI system + produce + hallucination — verb-noun collocation in computing
Rachel deleted the article after discovering it contained several serious hallucinations.
Rachel 在發現文章中有多處嚴重的幻覺資訊後刪除了它。
Several AI hallucinations on the forum gave users incorrect medical advice about dosages.
論壇上幾則 AI 幻覺資訊給了使用者錯誤的用藥建議。
Christopher showed the class an example of an AI hallucination involving a fake historical event.
Christopher 向全班展示了一個涉及虛構歷史事件的 AI 幻覺案例。
- fabrication
Fabrication is more general and does not imply AI; a person or a system can fabricate information.
- confabulation
In AI research, confabulation is sometimes used synonymously with hallucination, but hallucination is far more common in non-specialist writing.
- fact
A fact is verified and true; the opposite of a hallucinated piece of information.
文法句型
produce / generate + hallucination
用法筆記
In computing contexts, hallucination refers specifically to incorrect AI-generated output; do not use the medical meaning (senses 1-2) when discussing technology. The countable form ('three hallucinations') is common when referring to individual errors.
常見錯誤
4. the general tendency or phenomenon of artificial intelligence systems producing
AI幻覺
AI系統輸出假資訊的現象
the general tendency or phenomenon of artificial intelligence systems producing false or misleading information, considered as a technical problem that researchers try to solve
AI hallucination remains one of the biggest challenges for developers of language models.
AI 幻覺仍然是語言模型開發者面臨的最大挑戰之一。
AI hallucination + remains / is — subject pattern in academic contexts
Tunde's research paper explores why hallucination occurs in machine translation systems.
Tunde 的研究論文探討了機器翻譯系統中為何會出現幻覺現象。
hallucination + occurs in / happens in — describing where the phenomenon appears
The company invested heavily in reducing hallucination before launching their medical chatbot.
該公司在推出醫療聊天機器人之前，投入大量資源減少 AI 幻覺。
Selim warned that hallucination could cause serious harm if it affects automated medical diagnoses.
Selim 警告說，如果 AI 幻覺影響到自動醫療診斷，可能造成嚴重傷害。
- AI confabulation
A more technical synonym used in academic papers; less common in general technology journalism.
- model error
A broader term that covers any type of mistake an AI makes, not just fabricated content.
- factual accuracy
Factual accuracy is the opposite property — the quality of being correct and true.
用法筆記
This uncountable sense describes the phenomenon as a whole ('reduce hallucination'), rather than individual errors. It is used in technical discussions about AI reliability, safety, and model improvement. Distinguish from sense 3, which refers to a specific false output.
5. an idea about a situation, a person, or a possibility that has no basis in fact
妄想
沒有根據的錯誤想法或信念
an idea about a situation, a person, or a possibility that has no basis in fact and is held despite a clear lack of supporting evidence, often because the person wants or fears it to be true
The CEO's belief that the firm could not fail was a dangerous hallucination.
執行長認為公司不會倒閉的想法是一種危險的妄想。
hallucination that + clause — specifying the false belief content
Ada dismissed the idea that money alone buys happiness as a comfortable but false hallucination.
Ada 反駁了「金錢就能買到幸福」的想法，稱之為令人安心但虛假的妄想。
Obi lived under the hallucination that his old friends all wanted to harm him.
Obi 一直活在一個妄想中，認為老朋友都要害他。
The politician's speech was built on the hallucination that problems could be solved overnight.
那位政治人物的演講建立在「問題可以一夜之間解決」的妄想之上。
- delusion
Delusion is the more common word for a fixed false belief. Hallucination (sense 5) is more poetic or dramatic.
- fantasy
Fantasy is usually a pleasant imagined scenario that the person knows is not real; a hallucination in this sense is believed to be true.
- misconception
Misconception is a milder, more neutral term for an incorrect understanding.
文法句型
hallucination that + clause
用法筆記
This figurative sense is literary or formal. Unlike sense 1, it involves no sensory perception — only a false belief or expectation. For a false belief that is more rigid and resistant to evidence, use 'delusion' instead.