Smartphones May Charge Up Your Thumbs

December 23, 2014 5:06 PM

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TUESDAY, Dec. 23, 2014 (HealthDay News) -- 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.

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