ABSTRACT
A systematic study on the physiological study of magnetoencephalography (MEG) and electroencephalography (EEG) carried out since 1984 is described. The results obtained from the turtle cerebellum in vitro, hippocampus slices in vitro, the somatosensory cortex of the pig in vivo, and several other preparations provided concrete empirical support for many of the basic assumptions used in interpreting MEG and EEG signals from the humans. They have also provided insights on the physiological bases of pathophysiological events such as migraine and stroke.
