Eye movements can capture brain waves and even subtle changes in the skin can be captured with specialized instruments.
But what can be detected from emotional voices?
Pliny understood the ultimate law of nature and life very early on, which is that one person can never hear another person's heart.
The original intention was to complain about the experiment aimlessly, but now I am writing wherever I think of it... Thank you to all the readers who passed by ^_^
Mine clearance tip: It should not involve psychological counseling in the general sense, but will involve knowledge of cognitive neuroscience and clinical psychology. There are professional terms. CP is the protagonist's two. The narrative is non-chronological and irregular. HE.