One of the important things to know about DMT is that it is a very fast-acting [hallucinogen]. Users will feel the effect almost immediately, with the peak effect occurring very quickly... [test subjects] 'described an intense, rapidly developing rush that was both pleasurable and transiently anxiety-provoking... all subjects reported visual effects... more than half of the subjects also reported hearing sounds. These were typically high-pitched, such as 'whining, clattering, crinkling/crunching, or at times comical noises, such as 'boing' and 'sproing' sounds... More >>>