Somatosensory cortical activation in the absence of sensory stimulation

Sami MARTINKAUPPI1, Hannu ARONEN2, Antti KORVENOJA3, Antti PERTOVAARA4, Synnove CARLSON5 1Department of Radiology, Helsinki University Central Hospital, P.O.Box 380, Helsinki, Finland; 2Department of Radiology, Helsinki University Central Hospital, Helsinki, Finland; 3BioMag laboratory, Helsinki University Central Hospital, Helsinki, Finland; 4University of Turku, Turku, Finland; 5Institute of Biomedicine, University of Helsinki, Helsinki, Finland;