Figure 9: Individual, tinnitus-associated activation maxima in the cortex
In order to achieve individual activation patterns associated with tinnitus perception in the cortex, PET images without tinnitus perception (suppression by i.v. lidocaine dosing) are subtracted from images obtained while tinnitus is being perceived. In this way it is possible to focus magnetic-stimulation on the individual, tinnitus associated activation maxima detected in the "on-off" PET studies (with kind permission of Dr. med. C. Plewnia and Dr. med. M. Reimold, Tübingen).