Anatomical localization of human detection of weak electromagnetic radiation: experiments with dowsers.

Positive responses (dowsing signals) were evoked from 14 male "dowsers" by exposure to artificial electromagnetic (ac) fields. When the kidney area was shielded, such responses failed to occur. This suggests that magnetic sensors exist in man, probably located in the renal vicinity. Extinction of response was also observed when the head was shielded. This suggests the existence of additional magnetic sensory apparatus in the brain. Discrimination among magnetic patterns (signatures) is hypothesized to account for the apparent ability of dowsers to find specific underground substances, notably water. Such discrimination would require functional association of the sensory apparatus with a signature processor. Data are presented suggesting that this sensor-processor complex does indeed exist and may be located in the vicinity of the pineal gland.