You move your facial muscles all the time. Your eyebrows scrunch. Your lips curl. Your nose wrinkles. These actions are perceiver-independent and they help you sample the sensory world. Widening your eyes enhances your peripheral vision, so you can more easily detect objects surrounding you. Narrowing your eyes improves your visual acuity for objects right in front of you. Wrinkling your nose helps to block noxious chemicals. But these movements are not intrinsically emotional.6
