Average diurnal changes in melatonin levels are associated with hourly incidence of bereavement apparitions: support for the hypothesis of temporal (limbic) lobe microseizuring.

Transient suppressions of nocturnal melatonin levels due to enhanced geomagnetic activity have been suggested as the precipitating source of experiences of postmortem (bereavement) apparitions when the brain has been sensitized (grief) by elevations of the epileptogenic neuropeptide, corticotrophin-releasing factor. Although the hourly incidence of subjective experiences of telepathy, precognition, and bereavement apparitions were all significantly correlated with published indices of hourly melatonin levels, only the significant association between melatonin levels and apparitions was not changed when the other two classes of psi experiences were held constant.