Mirror vision

...The things seen are people, animals, objects, landscapes, etc., and may be seen vividly right in front of the eyes, inside the eyes, inside the head, or sometimes behind the person (extra-visual hallucinations). When animals are seen, they are called zooplankton hallucinations, when people or objects appear small they are called Lilliput hallucinations (Lilliput hallucinations) after Gulliver's Travels, and when one sees one's own image they are called self-image hallucinations (mirror hallucinations, doppelganger hallucinations). Hallucinations are generally more likely to occur when consciousness is impaired, and are therefore often seen in symptomatic psychoses (mental symptoms from acute infectious diseases, systemic diseases, etc.) and toxic psychoses (chronic alcoholism, poisoning with various hallucinogens, etc.)....

*Some of the terminology explanations that refer to "mirror hallucination" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…見えるものは人や動物，事物，風景などであり，眼前にありありと見たり，目の中，頭の中，ときには自分の背後に見る(視野外幻視)。動物が見えるのを動物幻視，人や物が小さく見えるのを《ガリバー旅行記》にちなんでリリパット幻視(小人島幻覚)とよび，自分の姿をみるのを自己像幻視(鏡像幻視，ドッペルゲンガー)と呼んでいる。幻視は一般に意識障害の際にあらわれやすく，したがって症状精神病(急性伝染病，全身疾患などの際の精神症状)や，中毒性精神病(慢性アルコール中毒，各種幻覚剤中毒など)に多くみられる。…

※「鏡像幻視」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報