I found a nifty publication from a team of scientists who are doing research which is just awesome.
A large proportion of paranormal experiences occur in specific places. They are associated with a sensed presence, fear, odd smells, apparitions along the peripheral (usually left) visual field that “disappear” when directly (foveally) viewed, and auditory experiences (loud noises). Continuous measurements within these areas reveal bursts of low-frequency magnetic fields, ultrasound, and other physical anomalies that can directly affect objects within the space as well as the human brain.
We have simulated and reproduced these experiences by applying complex frequency-modulated magnetic fields through the brains of normal people who have experienced haunts.
In one case a young man and woman, both of whom displayed elevated scores on the Roberts scale for temporal lobe sensitivity, reported suddenly awakening between 2:00 and 4:00 A.M. The man experienced an apparition moving through their bed. Both individuals experienced odd sounds (breathing), marked apprehension, and the feeling of a presence. Continuous monitoring of their electronically dense house revealed repeated transients of complex magnetic fields with peak strengths between 15 and 30 mG, similar to those that evoke the sensed presence in our experimental studies. These peaks were concurrent with the reports of the paranormal experiences. The fields were generated by less than optimal grounding of the house.
I want a hat which can make me see ghosts too!