Seeing without light
The brain can ‘see’ some things — even in complete darkness
By Stephen Ornes, 10:59 AM November 20, 2013
Spelunkers who explore caves often say they can see their hands move in the dark. A new study suggests those cavers aren’t hallucinating. It finds evidence that the brain sometimes creates visual “images” without input from the eyes.
The study based its conclusion on an experiment anyone can try. Find a dark place or put on a blindfold. (Or visit the nearest, darkest cave.) Next, wave your hands in front of your face. Did you see them?
Many people can, researchers report in a study published Oc...
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