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There are three known neurochemical pathways which cause hallucinations: | '''A hallucination is a perception that resembles a true perception but occurs when there is no external input.''' There are three known neurochemical pathways which cause hallucinations: | ||
* Activation of dopamine D2 receptions (D2Rs) with psychostimulants | * Activation of dopamine D2 receptions (D2Rs) with psychostimulants |