[ RadSafe ] Cell phone exposure increases brain cell activity

[Doug Huffman]

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The brain is fMRI 'activated' by talking, even sub-vocalizing.

http://www.rad.msu.edu/DNN/Default.aspx?tabid=458
USING fMRI TO COMPARE TALKING ALOUD TO "THE LITTLE VOICE IN THE HEAD"

SUMMARY

Vocalization-induced motion artifact has limited the ability to apply
fMRI to speech production. We describe a set of techniques for motion
reduction, detection, and correction intended to remove these artifacts
from cortical activation during overt speech. We combined these
techniques with Event-Related fMRI to compare overt speech with silent
speech, focusing on Broca?s area and its right-hemisphere homologue plus
two inferior regions of left and right primary motor cortex as regions
of interest

Unfortunately, evidently, not by communicating on the internet.

On 3/1/2011 15:04, Dixon, John E. (CDC/ONDIEH/NCEH) wrote:
> Excellent point Glenn. I would like to see all of the research related to this project. It could very well be that the "results" could be the result of the brain working the way it is supposed to work - cell phone or not.
> 
> Regards,
> John
> 
> -----Original Message-----
> From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Glenn R. Marshall
> Sent: Wednesday, February 23, 2011 9:54 AM
> To: The International Radiation Protection (Health Physics) Mailing List
> Subject: Re: [ RadSafe ] Cell phone exposure increases brain cell activity
> 
> 
> Just a thought:  The study was done while people were talking on their cell phones.  I can't help wondering if the brain is similarly stimulated when talking on a regular phone....
>  
> Glenn Marshall
>  
> -----Original Message-----
> From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Boby Mathew
> Sent: Wednesday, February 23, 2011 9:48 AM
> To: The International Radiation Protection (Health Physics) Mailing List
> Subject: [ RadSafe ] Cell phone exposure increases brain cell activity
> 
> 
> http://www.cnn.com/2011/HEALTH/02/22/cell.phone.brain.activity/index.html?hpt=T2
> 
> 
> 
> (CNN) -- The radiation emitted after just 50 minutes on a mobile phone increases the activity in brain cells, according to a new government-funded study.
> The effects of that brain activity are not known, said the researchers, who called for more study.
> Phones that were turned off did not create the same brain activity.
> The small study, published in the Journal of American Medical Association, is the first to look specifically at how electromagnetic radiation from cell phones affects glucose metabolism, a normal function, in the brain.
> "When glucose metabolism goes up, it activates cells. The findings are an indication that exposure to cell phones activate the brain much more easily than we previously thought," said Dr. Nora Volkow, National Institutes of Health neuroscientist and lead study author. 
>  
>  
>  
> Boby Mathew
> 
> 
>       
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