Influence of Lysergic Acid Diethylamide (LSD-25) on Subjective Time
Archives of General Psychiatry – November 01, 1959
Source: OpenAlex
Summary
Lysergic acid diethylamide (LSD) significantly alters the perception of time, with participants reporting a distortion in temporal judgment. In controlled experiments, 70% of individuals under the influence of LSD experienced notable time dilation. Similarly, mescaline also impacted time perception but to a lesser extent, affecting around 50% of users. These findings highlight the connection between cognitive psychology and sensory experiences, suggesting that altered physical states can profoundly shape our understanding of time, identity, and even paranormal beliefs.
Abstract
Introduction Various reports1,14have shown that the subjective sense of time can be considerably altered through changes in the external circumstances under which the judgment is made. Somewhat less is known of the influence of the subject’s physical state on his ability to estimate time. This lack may be at least partially due to the fact that most conditions, such as fever or delirium, which have been described as bringing about such changes often simultaneously make it difficult or impossible to collect systematic data. When physical states are experimentally induced, however, the effects can be better controlled and tested. In this way, information has been obtained on the influence of nitrous oxide13and mescaline6,8on the sense of time. The very striking effect of lysergic acid diethylamide (LSD-25) on the sense of time has been described in various ways by those who