Children selected from an array of only two faces, and their results were similar to the adults'.
Facial Action Coding System 3. There is controversy surrounding the question of whether facial expressions are worldwide and universal displays among humans. But different cultures have different rules for eye contact. Even beyond the idea of eye contact, eyes communicate more data than a person even consciously expresses. Holography is a powerful tool that can reconstruct wavefronts of light and combine the fundamental wave properties of amplitude, phase, polarization, wave vector and frequency. Facial Expression of Emotion: