"Hallucinogen" can cause a person in, its altered state, to see colors and hear sounds.
Hallucinogen refers to a substance that produces mental impacts that have a tendency to be related with phenomena , for example, dreams or religious magnification or with mental disarranges, for example, schizophrenia. Drugs create changes in discernment, thought, and feeling, running from bends of what is detected (fantasies) to detecting objects where none exist (hallucinations). Hallucinogens elevate tangible signs, yet this is frequently joined by loss of control over what is experienced.