Abstract
This study focused on the physiological responses of somatosensory stimulation using magnetoencephalogram (MEG) and functional magnetic resonance imaging (fMRI). The time course of signal intensity of fMRI and the dipole moment of magnetic fields responses are compared. Although there are many studies related to somatosensory responses in EEG and MEG, only a few studies have been performed of somatosensory response in fMRI. To investigate the relationship between neural activity and the hemodynamic response or BOLD (blood oxygenation level dependent) effects, the effect of the stimulus intensity to the right thumb was investigated by fMRI and MEG techniques.
