You look like I need more sleep
Like most people, not getting our beauty sleep can make us look tired and feel less attractive, but a new study from Sweden shows that the sleep deprived also are more likely to find others less attractive. That’s probably not a good finding for singles who often go out trying to meet someone after a long day of work.
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For the study, 45 young men and women were required to spend one night with no sleep and then another night with the possibility of 8 hours of sleep. The following mornings, eye-tracking technology was used as they looked at images of happy, angry, fearful, and neutral faces. The subjects then rated the faces for attractiveness, trustworthiness, and healthiness.
“The finding that sleep-deprived subjects in our experiment rated angry faces as less trustworthy and healthy-looking and neutral and fearful faces as less attractive indicates that sleep loss is associated with more negative social impressions of others,” senior author Christian Benedict of Uppsala University said in a statement.
When we are sleep deprived, the researchers added, we might not stop to really look at someone else, which has a negative impact on how we perceive people because we are not focusing on what their facial expressions are really telling us.
We already knew that not sleeping well has many negative effects on us, but now – thank you very much, science – we have something else to think about. Better hope your crush at work gets enough sleep so you’ll be accurately noticed.
The expanding-hole illusion of science
Time for a LOTME-style reality check: I think, therefore I am.
So far, so good. Next step: I think, therefore I am. I think.
Works for us. Now for the biggie: I think I am seeing the black hole in the middle of this image expanding.
Laeng, Nabil, and Kitaoka
Does that work for you? Do you perceive the black hole as expanding? If you do, then you fit in with the 86% of subjects in a recent study who perceived the same thing.
Lead author Bruno Laeng of the University of Oslo explained the effect in a statement from Frontiers Science News. “The circular smear or shadow gradient of the central black hole evokes a marked impression of optic flow, as if the observer were heading forward into a hole or tunnel. ... The pupil reacts to how we perceive light – even if this ‘light’ is imaginary like in the illusion – and not just to the amount of light energy that actually enters the eye.”
The illusion is so good at deceiving the brain “that it even prompts a dilation reflex of the pupils to let in more light, just as would happen if we were really moving into a dark area,” the investigators said.
Of the 50 men and women who had their eye movements measured while looking at the illusion, only 14% didn’t perceive the illusion when the hole was black. When the hole was a color, that figure went up to 20%. There also was a strong dilation reflex with black holes, but colored holes caused the subjects’ pupils to constrict, they noted.
Dr. Laeng and his associates can’t explain why some people don’t see the movement, but they did offer this: “Pupils’ dilation or contraction reflex is not a closed-loop mechanism, like a photocell opening a door, impervious to any other information than the actual amount of light stimulating the photoreceptor. Rather, the eye adjusts to perceived and even imagined light, not simply to physical energy.”
And now, back to our reality check: We think we perceive the light of a cheeseburger, therefore it’s time for lunch.