Sound level dependence of the primary auditory cortex: Simultaneous measurement with 61-channel EEG and fMRI. - Christoph Mulert; Lorenz Jäger; Sebastian Propp; Susanne Karch; Sylvère Störmann; Oliver Pogarell; Hans-Jürgen Möller; Georg Juckel; Ulrich Hegerl (NeuroImage, 2005)