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Hallucinations

Hallucinations. Examining the science involved when people claim to sense phenomena that do not exist outside the mind. What is a hallucination?.

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Hallucinations

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  1. Hallucinations Examining the science involved when people claim to sense phenomena that do not exist outside the mind.

  2. What is a hallucination? Hallucinations are defined as perceptions in a conscious and awake state in the absence of external stimuli which have qualities of real perception, in that they are vivid, substantial, and located in external objective space.

  3. Hallucinogenic Drug Types Psychedelics alert and fully conscious users experience cognitive distortion while simultaneously interacting with the "real world" LSD (ACID) PSILOCYBIN (SHROOMS) PEYOTE DMT MDMA (Ecstacy) High Doses of Cannabis Deliriants characterized by stupor, utter confusion, confabulation, and regression to "phantom" behaviors such as disrobing and plucking. Antidepressants Neuroleptics Sedatives Nutmeg Dissociatives marked by more internal effects such as closed eye visuals and detachment from the surrounding environment Ketamine PCP Various Opiates and Opioids NMDA Receptor Antagonists

  4. Hallucinations and Mental Illness Schizophrenia, psychotic depression, and post-traumatic stress disorder increase the likelihood of hallucinations

  5. Sleep Deprivation and Caffeine Severe sleep deprivation and large doses of caffeine can cause hallucinations. (See, you only hallucinated that D on your Final Exam!)

  6. What is Pareidolia Pareidolia - Psychological phenomenon involving a vague and random stimulus (often an image or sound) being perceived as significant. (Clouds, Stains, Tortillas) Often religious images are perceived in natural phenomena

  7. Why do we See Faces in Things Carl Sagan hypothesized that as a survival technique, human beings are "hard-wired" from birth to identify the human face and figure. This skill would aid early humans in survival but could also lead them to interpret random images or patterns of light and shade as being faces.

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