Ayahuasca has also been shown to generate new brain cells which could, theoretically, accomplish something similar. http://beckleyfoundation.org/ayahuasca-stimulates-the-birth-...
https://www.nature.com/articles/1395272
https://www.ncbi.nlm.nih.gov/pubmed/762668
https://www.ncbi.nlm.nih.gov/pubmed/14557608
https://www.psymposia.com/magazine/do-psychedelics-trigger-n...
https://maps.org/research/other-research
Also highly recommend stuff by Paul Stamets.