Quick Definition: A very brief, involuntary facial expression shown on the face of humans according to emotions experienced.
Nano-expressions can occur in high-stakes situations, where people have something to lose or gain. Unlike regular facial expressions, it is difficult to fake nano-expressions. Nano-expressions express seven universal emotions as micro-expressions: disgust, anger, fear, sadness, happiness.
Ever seen a girl who smiles with her mouth, but her eye muscles are unmoved? That is a fake smile. After she turns, the smile dissipates immediately. A genuine smile disappears much slower and has a tendency to change our internal state.
Lie to Me is a TV series that documents micro-expressions and how “the truth is always written on your face”:
Nano expressions are giving away what she’s really thinking about that guy.
Related Terms: Professional PUA, PUA, aPUA, Guru, Pick Up Artist, PUA Instructor, Bootcamp, FUG, Dick Crack, Chick Crack, Girl Game, Subcommunication, Facial Expression, Eye Contact, Body Language, micro-calibration