Which of the following is NOT a characteristic of hallucinogens?

Hallucinogens are a class of substances known for their ability to alter perceptions, mood, and a range of cognitive processes. They primarily affect the serotonin receptors in the brain, leading to significant changes in sensory experiences, thought patterns, and emotional functioning.

One of the characteristics of hallucinogens is the alteration of perception, which is a hallmark effect. Users often experience visual and auditory distortions, which is directly tied to how these substances engage with the neural pathways responsible for processing sensory information. Additionally, flashbacks can occur even after the drug has been metabolized, providing a lasting impact on perception and memory.

The aspect of legal status varies widely depending on the specific substance and jurisdiction; however, many hallucinogens are classified as illegal substances in numerous areas, making them generally not legal for recreational use. Thus, the statement about legal recreational use is not a characteristic of hallucinogens. Some of these substances, such as psilocybin and LSD, remain illegal in most parts of the world except in specific research or therapeutic contexts.