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Cellphone Use May Reveal Your 'Dominant Brain'
Date:5/17/2013

By Alan Mozes
HealthDay Reporter

FRIDAY, May 17 (HealthDay News) -- New research suggests the dominant side of your brain may make the call on which ear you choose to use while talking on your cellphone.

The dominant side of your brain is where your speech and language center resides. Ninety-five percent of the human population is left-brain dominant, and those people tend to be right-handed. The opposite holds true for people who are right-brain dominant. In this study, scientists found that roughly 70 percent of those surveyed held their cellphone up to the ear that was on the same side as their dominant hand.

This insight into the way people use their cellphones could one day help doctors quickly and safely locate and protect a patient's language center before beginning a potentially risky brain operation, the researchers said.

"In essence, this could be used as a poor man's Wada test," said study author Dr. Michael Seidman, director of the division of otologic/neurotologic surgery at the Henry Ford Health System in West Bloomfield, Mich. "[The Wada test] is the standard test used today to determine exactly where a surgical patient's language center is located, which is critical information to have if you want to carefully preserve a person's language abilities.

"The Wada test is, however, invasive and risky," Seidman said. "But by looking at how a person uses their cellphone, which side they listen in to, you can get shorthand insight into brain dominance. It's not a foolproof guarantee, but I would say it's a pretty reliable and safe way of going about it."

Seidman and his colleagues reported their findings in the May issue of the journal JAMA Otolaryngology -- Head & Neck Surgery.

To explore how brain dominance may relate to cellphone handling, the authors sifted through more than 700 online surveys completed by people who were members of a web-based otology (hearing) discussio
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