
Mind & BrainOctober 1, 1965
The Origins of Facial Expressions
The raised eyebrow, frown, smile, laugh and even the ability to speak may all have evolved from ancestral reflex actions that were gradually transformed into means of communication

The Origins of Facial Expressions
The raised eyebrow, frown, smile, laugh and even the ability to speak may all have evolved from ancestral reflex actions that were gradually transformed into means of communication