Which category of drugs is known to induce nystagmus?

Nystagmus, which is characterized by involuntary eye movements, can be induced by depressants. This category of drugs typically includes substances that slow down brain function and the central nervous system. When depressants are consumed, they can impair motor skills and coordination, leading to noticeable changes in eye movement, such as nystagmus. This occurs because depressants affect the areas of the brain responsible for controlling eye motion and balance.

In contrast, stimulants generally increase alertness and energy levels, which would not lead to the same physiological effects on eye movement. Narcotic analgesics primarily act as pain relievers and may lead to some level of sedation but are not typically associated with nystagmus like depressants are. Cannabis has various effects, but while it can influence perception and coordination, it is not commonly known to produce nystagmus to the extent seen with depressants. Thus, the connection between depressants and the induction of nystagmus is well established in the context of drug influence identification.