Study Finds Lack of Sleep Limits Ability to Interpret Facial Expressions

Researchers at the University of Arizona found an association between sleep deprivation and the ability to recognize facial expressions. The study was based on data from 54 participants who were shown photographs of the same male face with varying degrees of fear, happiness, sadness, anger, surprise and disgust. Researchers found that facial expressions — such as an obvious grin or frown were easily identifiable regardless of how much sleep a participant got. However, participants who were deprived of sleep for one night had a harder time identifying facial expressions of happiness or sadness compared to when they were rested. “As …

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