What is one of the psychological effects of hallucinogens?

Hallucinogens are a class of drugs that significantly alter perception, mood, and cognitive processes. One of the hallmark effects of consuming hallucinogens is the experience of hallucinations, which may involve perceiving sights, sounds, or other sensory experiences that do not have a basis in reality. This can manifest as vivid visual imagery, auditory distortions, or even synesthetic experiences, where one sense is perceived through another (like seeing sounds or hearing colors).

Hallucinations occur because hallucinogens interact with neurotransmitter systems in the brain, particularly serotonin receptors, thereby affecting how sensory information is processed. This distinctive attribute is what sets hallucinogens apart from other substances; while they may also be associated with various side effects or secondary symptoms (such as anxiety or changes in reflexes), the central and defining characteristic is the experience of hallucinations. This understanding is crucial for anyone studying the effects of these drugs in a criminal investigations context.