所以 ， 我哋掃描佢哋嘅大腦 ， 畀佢哋睇吓佢哋情人嘅相片 ， 然後畀佢哋睇一張沒乜特別嘅相片 仲有畀一啲令佢哋分心嘅任務 咁我哋就可以發現 - 睇住同一個腦袋 ， 當佢興奮嘅狀態
So, we scan their brains, let them look at a picture of their lover, and then show them a picture that is nothing special, and give them a little distraction task so that we can find out - look at the same head, when he is excited