Feeds

Mobile phone signals prevent sleep, claim boffins

Keeps the Sandman at bay

Secure remote control for conventional and virtual desktops

Updated If you’re wondering why you rarely get a good night’s sleep, then a group of boffins may have the answer: it’s because of your late-night mobile phone calls.

A joint study by the Karolinska Institute in Sweden and Wayne State University in the US studied small groups of men and women between the ages of 18 and 45.

It found that when exposed to GSM wireless signals before going to bed, the guinea pigs participants took longer to drift off into deep sleep and then spent less time in that state than unexposed sleepers did. They also experienced headaches and confusion.

The 884MHz frequency used is close to that used by some mobile networks. But UK mobile services operate on a host of frequencies, ranging from 872-960MHz and 1920-2170MHz, including frequencies in between.

Those participants exposed to the mobile phone signals were exposed for three hours at at time, arguably longer than most phone calls. The researchers described this as a "worse case scenario".

Sleep phone study rig

"This is Steve. I'm not in right now..."

Rather than use a real phone, the scientists effectively strapped a transmitter to each subject's head. The radiation was sent toward the left side of of the head.

The exposure was set to 1.4W/kg - less than both the US and European phone radiation exposure limits: 1.6W/kg and 2.0W/kg, respectively.

During the radiation sessions participants carried out performance and memory tests, rated their own experiences against a list of possible symptoms, and recorded their mood. As they slept, their brain activity was measured using an EEG, and after waking, they performed additional tests in the lab.

Researchers concluded that either mobile phones effect areas of our brains associated with activating and co-ordinating the stress system, or that cellular phone radiation disrupts the production of hormones controlling our body clocks.

Although if you sleep in the Starry Night Sleep Technology Bed then you'll probably be forgiven for never getting to sleep...

The paper can be read here (PDF).

The essential guide to IT transformation

More from The Register

next story
Apple's iWatch? They cannae do it ... they don't have the POWER
Analyst predicts fanbois will have to wait until next year
Barnes & Noble: Swallow a Samsung Nook tablet, please ... pretty please
Novelslab finally on sale with ($199 - $20) price tag
Apple to build WORLD'S BIGGEST iStore in Dubai
It's not the size of your shiny-shiny...
Just in case? Unverified 'supersize me' iPhone 6 pics in sneak leak peek
Is bigger necessarily better for the fruity firm's flagship phone?
Steve Jobs had BETTER BALLS than Atari, says Apple mouse designer
Xerox? Pff, not even in the same league as His Jobsiness
Apple analyst: fruity firm set to shift 75 million iPhones
We'll have some of whatever he's having please
TV transport tech, part 1: From server to sofa at the touch of a button
You won't believe how much goes into today's telly tech
The agony and ecstasy of SteamOS: WHERE ARE MY GAMES?
And yes it does need a fat HDD (or SSD, it's cool with either)
prev story

Whitepapers

Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
7 Elements of Radically Simple OS Migration
Avoid the typical headaches of OS migration during your next project by learning about 7 elements of radically simple OS migration.
BYOD's dark side: Data protection
An endpoint data protection solution that adds value to the user and the organization so it can protect itself from data loss as well as leverage corporate data.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?