Smartphones May Charge Up Your Thumbs, University of Zurich Study

Regular use of touch screens on smartphones changes the way your fingers and brain work together, a new study reveals. People who used touch-screen phones showed greater brain activity when their fingers and thumbs were touched than those who used older-style cellphones, the researchers said. The findings suggest that repetitive movements over the smooth touch-screen surface reshape sensory processing from the hand, the study authors reported Dec. 23 in the journal Current Biology.

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