Energetic Source of Poltergeists?

[pod3]

As someone who has been exposed to divergent schools of thought, I'd be grateful if you could explain if it is the retention or release of energy which causes poltergeists.

(I see correspondense to the incubi topic.)

For instance, EEGs showed Russian psychics in a state of controlled (unreleased?) rage, however excessive masturbation (forced release) has been said to cause poltergeist-like disturbances.

Perhaps, if the Russians were literally fuming, the anger WAS released in a spiritual sense?