Lipnicki (2009) reported an association between local geomagnetic activity (GMA) and the bizarreness of dreams.  Lipnicki analysed the dreams of a young adult male which were recorded over a period of 6 1/2 years.  Dreams were self-rated for bizarreness on a 1–5 scale. At the lower end of the scale (1), dreams would be normal and representative of what would happen in reality. Dreams that were rated 3 could possibly happen but were unlikely.  Dreams rated 5 and considered bizarre would be dreams that had no connection with reality and could never happen.

Lipnicki found that on days of low geomagnetic activity dreams were found to be significantly more bizarre than the dreams that were recorded on days of high activity.

Lipnicki, D (2009) An association between geomagnetic activity and dream bizarreness. Volume 73, Issue 1, Pages 115-117 (July 2009)