It only has that effect when they gave it to people in test trials in terrible settings like mental institution s and prisons which is why Dr Leary was adamant about set and setting
If you consider the entirety of your consciousness and the structure of thought processes and sensory perceptions.. If LSD blurs all these things, mixes and merges them a bit with excessive neural activity.. It's clear to see your sensory input will have a significant effect on the experience. Even in this regard, we can consider all the possible associations a given external stimulus will trigger in the brain.
External stimuli may be one of the few contributors of the experience that has a significant temporal persistence, possibly giving it substantial influence.
External stimuli may be one of the few contributors of the experience that has a significant temporal persistence, possibly giving it substantial influence.