Comparison of non-invasively recorded motor- and auditory-related cortical focal DC-changes using DC-Magnetoencephalography

Introduction: In previous studies we demonstrated that physiologically induced cortical slow neuronal processes can be recorded non-invasively during sustained motor and auditory stimulation using modulation-based DC-Magnetoencephalography (DC-MEG). In the present study we combined and interleaved both motor and auditory activation paradigms to evaluate intermodal cortical activation differences concerning the dynamics, amplitudes and localization of the neuronal activation. Methods: 13 healthy right-handed subjects were investigated. Pseudorandomized 30s periods of simple right finger movements or concert music…