Theoretically, different people thinking of the same word or image would have the same activity in their brains, but since no one really knows exactly how the brain works, this is not certain.
理论上来说，不同的人在想一个相同的词语或者是图片时会在大脑里有相同的活动，但是因为没有人真正明白大脑是怎样工作的，这个理论具有不确定性。
But when a person simply thinks of a word instead of saying it, there are no muscle signals - just the activity in the parts of the brain involved in listening.
但是当一个人只是在内心里说话是，就不会产生控制肌肉的信号，大脑中仅仅控制听觉的部分在活动。
Their task was to predict the pattern of activity for the two missing words from the group of 60, and then to deduce which word was which.
电脑的任务就是找到那2个没有被输入单词所对应的大脑活动类型，并且推算出那2个单词。
应用推荐