2009/11 Increased theta and alpha EEG activity during nondirective meditation.

Lagopoulos J, Xu J, Rasmussen I, Vik A, Malhi GS, Eliassen CF, Arntsen IE, Saether JG, Hollup S, Holen A, Davanger S, Ellingsen Ø.

Source

Discipline of Psychological Medicine and Northern Clinical School, University of Sydney, Sydney, New South Wales, Australia. jlagopoulos@med.usyd.edu.au

http://www.ncbi.nlm.nih.gov/pubmed/19922249