Hallucinogens or psychedelics are mind-altering drugs, which affect the mind’s perceptions, causing bizarre, unpredictable behavior, and severe, sensory disturbances that may place users at risk of serious injuries or death. Hallucinogens powerfully affect the brain, distorting the way our five senses work and changes our impressions of time and space. People who use these drugs a lot may have a hard time concentrating, communicating, or telling the difference between reality and illusion. Hallucinogens cause people to experience - you guessed it - hallucinations, imagined experiences that seem real. The word "hallucinate" comes from Latin words meaning, "to wander in the mind."
Your brain controls all of your perceptions; the way you see, hear, smell, taste, and feel. Chemical messengers transmit information from nerve cell to nerve cell in the body and the brain. Your nerve cells are called neurons, and their chemical messengers are called ne...