Previous researches have shown
that the way brain processes fear impacts our other body functions like heart
rate. Researchers from the University of Toronto conducted experiments to
analyze the benefits of facial expressions in response to fear.
"Emotional expressions look the way they do for a reason
Daniel Lee, a psychology graduate student who conducted the study. He further
adds that these expressions are useful for communicating the emotional states
with others. Researchers observed the facial response of the participants to
visual fear stimuli. It was found that
participants who made wide-eye expressions had a greater field of view and were
able to identify visual patterns, which were in their outer vision.
Scientists also noted that this wide-eye expression helped others to
identify easily the direction in which the eyes of the person in fear were
looking and immediately respond to the stimulus.
"Our ability to process other people's eye gaze is already finely-tuned;
the fact that this processing is further enhanced by expressive eye widening
underscores the importance of our eyes as social signals
", says Lee.
The findings of the study are published in the journal