A fascinating collaboration between a medieval historian and a professor of psychiatry, this enthralling book applies modern biological and psychological research findings to the lives of medieval mystics and ascetics.

Drawing upon a database of over 1,400 medieval holy persons and in-depth studies of individual saints, this illuminating study examines the relationship between medieval mystical experiences, the religious practices of mortification; laceration of the flesh, sleep deprivation and extreme starvation, and how these actions produced altered states of...

A fascinating collaboration between a medieval historian and a professor of psychiatry, this enthralling book applies modern biological and psychological research findings to the lives of medieval mystics and ascetics.

Drawing upon a database of over 1,400 medieval holy persons and in-depth studies of individual saints, this illuminating study examines the relationship between medieval mystical experiences, the religious practices of mortification; laceration of the flesh, sleep deprivation and extreme starvation, and how these actions produced altered states of...