To suppliment my blog entries on "Mind Over Matter" and "Power of Prayer" I dug up some of my old research about the effect of the Earth's magnetic field on our brains, even affecting dreams.
Exposure to static magnetic fields as used in NMR-equipment generates a new encephalomagnetic field in human brain. [It has also been]…found…that by measuring sleep parameters, the REM latency is shortened in the E-W position of sleepers compared with the N-S position. There are statistically significant differences in the EEG of normal subjects, depending on whether the subjects sit facing the N-S or E-W direction. The difference is especially pronounced in the alpha-power.