失聰也可能造成幻覺,通常是音樂,偶爾也會出現鳥鳴、鈴聲、割草機等其他聲音。音樂的幻覺跟幻視不一樣,音樂幻覺通常很真實,細節可能十分詳細,每個音符、每種樂器都聽得清清楚楚,雖然有時只是幾小節不斷反覆。奧立佛.薩克斯提到,有位患者在她先生計時下的十分鐘內聽到《齊來,宗主信徒》(O Come, All Ye Faithful)十九次半。還有位患者是小提琴手,在演奏音樂的當下聽到另一段音樂。不過,這些幻覺很少重播過去的情節,而是重複知名且很可能常聽到的內容。
裸蓋菇素的研究引起了美國中央情報局 CIA 的注意,不過不是因為什麼違法亂紀的問題,而是他們⋯⋯也想「瞭解更多」!1950年代 CIA 有項名為 MK-Ultra 2 的精神控制計畫,希望找到一些可以作為吐真劑、審訊和行為操縱工具的潛力藥物。他們的實驗藥物包括裸蓋菇素、迷幻藥 LSD、嗎啡、海洛因、一種萃取自仙人掌的致幻劑麥斯卡林等,並在監獄、醫院、學校,甚至從巧立名目的慈善基金會裡招募試驗對象。3
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