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Stories Stories Lifestyle Did You Know That Your Pupils Adjust Themselves Even While You Imagine Bright and Dark Scenes?

Did You Know That Your Pupils Adjust Themselves Even While You Imagine Bright and Dark Scenes?

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Written by Michael     April 07, 2014    
 
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"Visual imagery is a private and subjective experience which is not accompanied by strongly felt or visible physiological changes," explains psychological scientist and lead researcher Bruno Laeng of the University of Oslo. "It is a particularly difficult topic to research, as years of controversy about the nature of mental imagery testifies." Along with co-author Unni Sulutvedt, also from the University of Oslo, Laeng conducted a series of experiments to see whether they could tap into subjective mental imagery by monitoring pupillary size with an eye-tracking device. 

New Research finds That Conjuring up a Visual Image in The Mind — Like a Sunny Day or a Night Sky — Has a Corresponding Effect on The Size of Our Pupils, As If We Were Actually Seeing The Image

Initially, participants were asked to look at a screen while triangles of different levels of brightness appeared. When they were later asked to actively imagine those triangles, the participants' pupils varied in size according to the triangle's original brightness. When imagining brighter triangles, their pupils were smaller. But when imagining darker triangles, their pupils were larger. In a series of additional experiments, the researchers found that participants' pupils also changed in diameter when imagining a sunny sky, a dark room, or a face in the sun compared with a face in the shade, as if in preparation for experiencing the various scenes. 

Read Full Article:  Did You Know That Your Pupils Adjust Themselves Even While You Imagine Bright and Dark Scenes?  

 

Location

Epicentre
• Oslo, Norway

Details

Author
• Rukmani Krishna
Contributor's Comment
• These findings, published in Psychological Science, a journal of the Association for Psychological Science, suggest that the size of our pupils is not simply a mechanistic response, but one that also adjusts to a subjective sense of brightness.
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