She's putting electrodes on his head so that we can monitor the electrical activity Now, clearly we're not going to put a couple of electrodes on his head and understand exactly what all of his thoughts are on the track.
彼の頭に電極を付けて 走行中の脳の　ー 電気活動をモニターするのです もちろん 電極をいくつか付けただけで 走行中の彼の思考が全て 分かるわけではありません