Imposition is the act of adding to, or replacing sensory information (visual, aural, tactile, etc.), with other perceived information, in the form of a self-imposed hallucination. This is practised in order to see, smell, feel, taste or hear something that isn't there, such as the mind-form or mind-voice of a tulpa, or some other mental construct. Usually used to refer to visual imposition (seeing your tulpa). Feeling your tulpa hugging you would be an example of tactile imposition.

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