Via Top Health News -- ScienceDaily
The meaning of a word is enough to trigger a reaction in our pupil: when we read or hear a word with a meaning associated with luminosity ("sun," "shine," etc.), our pupils contract as they would if they were actually exposed to greater luminosity. And the opposite occurs with a word associated with darkness ("night," "gloom," etc.). These results open up a new avenue for better understanding how our brain processes language.
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