The term psychoactive refers to substances or activities that can directly affect a person's mental state, emotions, and overall consciousness. These substances or experiences may alter perception, mood, thinking, or behavior in some way. Examples of psychoactive drugs include alcohol, marijuana, cocaine, LSD, and prescription medications such as antidepressants or stimulants. Psychoactive also refers to activities that can have a similar effect on the mind, such as meditation, yoga, dancing, or even listening to music.