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Study: Brain makes call on which ear is used for cell phone
Date:2/21/2012

DETROIT - If you're a left brain thinker, chances are you use your right hand to hold your cell phone up to your right ear, according to a new study from Henry Ford Hospital in Detroit.

The study finds a strong correlation between brain dominance and the ear used to listen to a cell phone, with more than 70 percent of participants holding their cell phone up to the ear on the same side as their dominant hand.

Left brain dominate people those whose speech and language center is on the left side of the brain are more likely to use their right hand for writing and other everyday tasks.

Likewise, the Henry Ford study shows most left brain dominant people also use the phone in their right ear, despite there being no perceived difference in their hearing in the left or right ear. And, right brain dominant people are more likely to use their left hand to hold the phone in their left ear.

"Our findings have several implications, especially for mapping the language center of the brain," says Michael Seidman, M.D., FACS, director of the division of otologic and neurotologic surgery in the Department of Otolaryngology-Head and Neck Surgery at Henry Ford.

"By establishing a correlation between cerebral dominance and sidedness of cell phone use, it may be possible to develop a less-invasive, lower-cost option to establish the side of the brain where speech and language occurs rather than the Wada test, a procedure that injects an anesthetic into the carotid artery to put half of the brain to sleep in order to map activity."

Dr. Seidman notes that the study also may offer additional evidence that cell phone use and brain, and head and neck tumors may not be linked.

If there was a strong connection, he says there would be a far more people diagnosed with cancer on the right side of their brain, head and neck the dominate side for cell phone use. But it's likely that there is a time and "dose-dependence" t
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Contact: Krista Hopson
khopson1@hfhs.org
313-874-7207
Henry Ford Health System
Source:Eurekalert  

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