Visual, auditory, tactile and so on, there is no external stimulus and the feeling appears false. Suffering from a mental illness or the person in the hypnotic state often hallucinations.
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No. 4
Visual hallucination
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No. 5
In the absence of external stimulation and occur under abnormal perception. There are many illusions, such as: auditory hallucination, visual hallucination, phantom smell, taste magic, magic touch and so on.
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English Expression
n.: appearance, fantasm, hallucination, illusion, psychedelia, rainbow, stardust, see things, allucination, illusion of seeing or hearing sth when no such thing is actually present, [U] state of mind in which one is deceived in this way, fantasy, phantasm
French Expression
n. illusion des sens
Thesaurus
photism, acousma, illusion, false idea, belief or impression, false perception fantasy, chimera, wild or impossible idea, bubble, have a head full of bees, daydream, envisage, disguise, any illusion or hope that cannot be fulfilled, apparition, apparition, fancy, jiaxiang, simulacrum