Depersonalization phenomenon as described in the Pali Canon

According to the gentleman in this video ... > Enlightenment, DP/DR & Falling Into the Pit of the Void ~ Shinzen Young > > Shinzen talks about the empowering facets of enlightenment and compares this to "enlightenments evil twin" DP/DR. He talks about the rare occasions that he's encountered a meditator moving in the direction of DP/DR and the strategy he used to "cure" it using mindfulness methods. ... the phenomenon of "depersonalization" is described in the Pali Canon. Could anyone provide the source(s) of this? As a secondary question- could anyone share their personal experience with/knowledge of depersonalization occurring as a result of meditation? Thank you