Hallucinogens are a group of drugs, mostly of plant origin, that completely modify the ability of ideation. There are modifications of the course of thought. They are the most potent drugs, because they are used in the amount of micrograms (thousandth of the milligram).
The person using hallucinogen has changes in the course of thought. The individual is relatively consciously aware of the almost automatic unfolding of his thinking: the associations of ideas are freely, capriciously, sometimes absurd. In addition, the individual has increased heart rate, higher blood pressure and dilated pupils.
