Dr Devin Terhune - The effects of microdose LSD on time perception and response to suggestion

Microdose LSD affects internal time perception by causing users to over-reproduce temporal intervals. This effect is subtle, not robust across all metrics, and appears independent of any subjective drug-induced alterations. A Bayesian model helps explain these changes, suggesting that low doses of the substance can down-weight personal priors regarding time. Related experiments on suggestibility reveal that LSD might increase responsiveness to external cues. While the substance can enhance suggestibility, it does not reliably translate into improved cognitive performance on all learning tasks. The findings highlight the complex interaction between psychedelic substances, baseline cognitive traits, and the environment, emphasizing that suggestibility plays a significant role in how these effects manifest.