Lewis, recapping, on 57:
states of "altered consciousness and dissociation" are universal
"these may be explained in different cultures either mystically or non-mystically (and sometimes in both ways in different contexts). Spirit posession and soul-loss (sometimes more accurately described by Linton's term 'soul-projection') are the two principal mystical explanations"
"Possession is believed to be both involuntary (or uncontrolled) and voluntary (or controlled)"