Correction: Synergistic, multi-level understanding of psychedelics: three systematic reviews and meta-analyses of their pharmacology, neuroimaging and phenomenology

The meta-analysis of the 11-dimensional Altered States of Consciousness (11D-ASC) included three studies that contained duplicated data from other papers: Duerler et al. ( 2021), Lewis et al. (2017), and Preller et al. (2017).When these studies are removed from the analysis, the results are generally similar to the previously reported findings.Out of 33 comparisons (3 doses x 11 dimensions) between LSD and psilocybin, one becomes insignificant (insightfulness, medium dose), while one becomes more significant (disembodiment, medium dose).Note that the 5D-ASC meta-analysis did not include any duplicates, hence the results of that meta-analysis are unaffected.We also wish to acknowledge two previous meta-analyses on the phenomenology of LSD and psilocybin, respectively, by Hirschfeld and colleagues:1.