What type of drug can produce feelings of disconnection from the body and environment?

The type of drug that can produce feelings of disconnection from the body and the environment is a dissociative. Dissociative drugs, such as ketamine and PCP, work by disrupting the normal functioning of the brain's neurotransmitter systems, leading to sensations of detachment or disconnection. Users might feel as if they are observing themselves from outside their body or that their surroundings are unreal or dreamlike. This characteristic distinguishes dissociatives from stimulants, hallucinogens, and depressants, each of which affects perception and mood in different ways. Stimulants typically increase alertness and energy, hallucinogens alter sensory perception and can distort reality but do not primarily induce feelings of disconnection, and depressants generally slow down the central nervous system. Thus, the unique effect of dissociatives on one’s perception of self and environment underscores why this category of drug is the correct choice for this question.