The following article is a good place to begin. It's from the University of Toronto and discusses the history of psychedelic research in Canada, including what is currently underway.
The Canadian revival of psychedelic drug research. Kerry Banks. June 14, 2019.
Anderson T, Petranker R, Rosenbaum D, Weissman C, Dinh-Williams L, Kai K, Hapke E, Farb N. Microdosing psychedelics: personality, mental health, and creativity difference in microdosers. 2018.
AndersonT, Petrannker R, Christopher A, et al. Psychedelic microdosing benefits and challenges: an empirical code book. Harm Reduction Journal 16, 43 (2019)
Joseph M. Rootman, Pamela Kryskow, Kalin Harvey, Paul Stamets , Eesmyal Santos-Brault , Kim P. C. Kuypers, Vince Polito, Francoise Bourzat & ZachWalsh Adults who microdose psychedelics report health related motivations and lower levels of anxiety and depression compared to non-microdosers
Ross S, Bossis A, Fuss J, Agin-Liebes G, Malone T, CohenB, Mennenga S, Belser A, Kalliontzi K, Babb J, Su A, Corby P, Schmidt B. Rapid and sustained symptom reduction following psilocybin treatment for anxiety and depression in patients with life threatening cancer: a randomized controlled trail. 2016. Journal of Psychopharmacology 2016 Vol.30
Davis AK, Barrett FS, May DG, et al. Effects of psilocybin assisted therapy on major depressive disorder. A randomized clinical trial. Jama Psychiatry. 2021; 78(5). 481-489.
John Hopkins Center for Psychedelic & Consciousness Research is currently research how psychedelics, including psilocybin,, affect behavior, mood, cognition, brain function, and biological markers of health.
Prochazkova L, Lippelt DP, Colzato LS, Kuchar M, Sjoerds Z, Hommel B. Exploring the effect of microdosing psychedelics on creativity in an open-label natural setting. Psycopharmacology(Berl). 2018. Dec. 235(12):3401-3413,
Hutten NRPW, Mason N, Dolder P, Kuypers K. Motives and side-effects of microdosing with psychedelics among users. International Journal of Neuropsychopharmacoloty, Vol 22, Issue 7, July 2019, Pg 426-434.
Hutten NRPW, Mason NL, Dolder PC, Kuypers KPC. Self-rated effectiveness of microdosing with psychedelics for mental physical health problems among microdosers. Front Psychiatry. 2019 Sep 13;10:672.
Carhart-Harris RL, Roseman L, Bolstridge M, et al. Psilocybin for treatment-resistant depression: FMRI-measured brain mechanisms. Sci Rep 7, 13187 (2017).
Polito V, Stevenson RJ. A systematic study of microdosing psychedelics. PL0S One. 2019; 14(2):e0211023.