So his vision is normal because the visual areas are normal, his emotions are normal -- he'll laugh, he'll cry, so on and so forth -- but the wire from vision to emotions is cut and therefore he has this delusion that his mother is an impostor.
他的视觉没有问题，因为视觉区是正常的， 他的情绪反应也没有问题，他会哭会笑，等等 但是从视觉到情绪的线路却断了， 因此，他有了这个母亲是冒牌货的错觉。