LSD is only one brain-altering compound in a class of medicine known as hallucinogens, which trigger individuals to possess hallucinations—issues that someone sees, hears or feels that seem like actual but are the truth is established because of the brain. These receptors aid visualization and interpretation of the real environment. https://medium.com/@LsdWorld/introduction-to-lsd-what-you-need-to-know-e70ffecb3a92