Emotional faces weren't just for looks. The team found that a fearful visage improves peripheral vision, speeds up eye movement, and boosts air flow, potentially allowing a person to more quickly sense and respond to danger. Squinty, scrunched-up disgusted faces had the opposite effect, limiting vision and decreasing air flow, ostensibly to keep out substances that might be harmful to the eyes or lungs.
Monday, June 16, 2008
An improved chance of survival ...
... is the reason behind some of the common faces humans (and some animals) make.
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