A paper by S.Subramanyam, P.V.Sankernarayan and T.M.Srinivasan called "Effect of magnetic micropulsations on the biological systems - a bioenvironmental study" that appeared in Int.J.Biometeor.1985.vol 29 says -
their study showed decisive changes in the electrophysiology, neurochemistry and biochemistry when oriented to north or east. The north orientation appeared to induce inhibition of brain electrical activity and asscociated neurochemical and biochemical changes whereas the east orientation showed a response of calm blissful alertness.
http://resources.metapress.com/pdf-preview.axd?code=3288m43473051v6j&size=largest
