A Discussion of and a Comment on Dr. Walker's Speech

　I quite agree with Dr．　Walker's opinion　that an epileptic discharge which is produced　in a certain site of the cortex propagates　from the cortex to the subcortical structures　and the generalization of an attack happens　through the progressively greater involve—ment of subcortical structures and of systems　other than the motor．

　But I believe that these structures must　be devided into two groups, of which one　contains the indispensable structures for　producing a seizure in body muscles, the　other must be a group of structures the　activities of which accompany the activities　of the first group．