Answer:
The incorrect statement is : b. The user is usually able to control the psychedelic experience.
Step-by-step explanation:
Hallucinogens, such as LSD, are a class of psychoactive drugs that causes hallucinations, distortions in perceptions of reality, alters the awareness of surroundings and substantial subjective changes in the consciousness, thoughts and the emotions. Thus, the psychedelic experience caused by the hallucinogens can not be controlled.
The various effects of LSD are:
Distorted perception of time and space, vivid perception including auditory and visual effects, sense of cosmic merging and lost identity.