Psychotropic plants are natural species that can alter mental states, affecting mood, perception, and cognition. These plants contain chemical compounds that interact with the brain's neurotransmitters, leading to various psychological effects. Common examples include psychedelic mushrooms, cannabis, and peyote cactus. Many cultures have used psychotropic plants for spiritual, medicinal, or recreational purposes. They are often associated with traditional practices and rituals, such as those found in shamanism or indigenous ceremonies. Research into these plants continues, exploring their potential therapeutic benefits and risks in modern medicine.