Attempting to contact the dead puts people into a unique mental state, the Daily Grail reports:
A new study co-authored by Dean Radin and Julie Beischel has found that electrocortical activity during mediumistic ‘communication’ is distinctly different than during other contemplative moments such as thinking about living or imaginary people.
The research was done to explore two questions: possible correlations between the accuracy of mediums’ statements and the electrical activity in their brain; and the differences in mediums’ brain activity when they intentionally evoked four different subjective states.
To do so, the researchers collected psychometric and brain electrophysiology data from “six individuals who had previously reported accurate information about deceased individuals under double-blind conditions” (ie. mediums).
The researchers conclude[d] that the differences in electrocortical activity “suggest that the impression of communicating with the deceased may be a distinct mental state distinct from ordinary thinking or imagination”.