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You’re probably aware of the fact that your gestures and postures, that is your body language, reveals a lot about you. The same goes for your handedness. Recently, researchers at Henry Ford Hospital in Detroit have found that to which ear you hold your cellphone may reveal your brain dominance.

It has long been known that right handed people, who make up 90 percent of the population, tend to have left-hemiphere dominant brains. That is, they tend to be more stable emotionally, and prioritize logic and language over others. In contrast, left handed people usually tend to have right-hemispere dominant brains. That means, they tend be more subtle to emotion and visual appeal. However, this division, often called language hemisphere division (LHD), is not that simple, and shows unpredictable pattern in case of the lefties.

The new research by scientists as Henry Ford Hospital found that which ear is used when talking on cellphone may reveal brain dominance too. Most people who hold their cellphone to their left ear tend to be right-hemisphere dominant. And, people who hold their cellphone to their right ear tend to be left-hemisphere dominant. Scienetist are calling this method the auditory hemispere division (AHD).

The study also suggests that brain and neck tumors may not be caused by cellphone use.

The question is, why should we care? Researchers say that the findings will be helpful in “studying the impact of cellphone safety.” Additionally, the findings may help 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 part of the brain to sleep in order to map activity,” said lead researcher Michael Seidman, director of the division of otologic and neurotologic surgery in the Department of Otolaryngology-Head and Neck Surgery at the Henry Ford Hospital.

The findings have been published in JAMA Otolaryngology–Head & Neck Surgery.

Thanks to: CNET

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