[Possible effect of the geomagnetic field on human sleep].
D001921:Brain / Q000502:physiology; D002675:Child, Preschool; D004569:Electroencephalography; D006801:Humans; D008280:Magnetics; D012890:Sleep; D012894:Sleep Stages
O moznom vplyve magnetického pol'a zeme na spánok cloveka.