*3.7.1 TMS-EEG-*

TMS-evoked surface potentials from any cortical region can be recorded with scalp EEG electrodes and used to estimate the regional excitability of the extra-motor cortex [23]. This increases spatial benefits and also the very high temporal resolution of EEG makes it possible to detect differential effects of brain disturbance on TMSinduced responses. TMS-EEG recording is obtained using specialized amplifiers and electrode caps designed to minimize stimulus artifact. The high sampling frequency and other adjustments in the acquiring of signals permit recording cortical potentials induced with TMS and the spread of such oscillation to the different connected regions from the site of stimulation [35].
