Social Media Sidebar


Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

When seen through the lens of technology, few resources are truly scarce; they’re mainly inaccessible. 


Peter Diamandis

Network theory suggests consciousness is global in the brain

Posted in Science on 17th Mar, 2015 11:42 AM by AlexMuller

Researchers have found evidence that awareness or consciousness results from widespread communication across sensory and association areas of the cortex, challenging previous hypotheses that changes in restricted areas of the brain were responsible for producing awareness.

“Identifying the fingerprints of consciousness in humans would be a significant advancement for basic and medical research, let alone its philosophical implications on the underpinnings of the human experience,” said René Marois, professor and chair of psychology at Vanderbilt University and senior author of the study.
“Many of the cognitive deficits observed in various neurological diseases may ultimately stem from changes in how information is communicated throughout the brain.” The researchers used graph theory, a branch of mathematics concerned with explaining the interactive links between members of a complex network, such as social networks or flight routes, to characterize how connections between the various parts of the brain were related to awareness.
In the experiment, participants in a functional magnetic resonance imaging (fMRI) scanner were asked to detect a disk that was briefly flashed on a screen. In each trial, participants responded whether they were able to detect the target disk and how much confidence they had in their answer. Experimenters then compared the results of the high-confidence trials during which the target was detected to the trials when it was missed by participants. These were treated as “aware” and “unaware” trials, respectively.
They found that no one area or network of areas of the brain stood out as particularly more connected during awareness of the target; the whole brain appeared to become functionally more connected following reports of awareness.
“We know there are numerous brain networks that control distinct cognitive functions such as attention, language and control, with each node of a network densely interconnected with other nodes of the same network, but not with other networks,” Marois said. “Consciousness appears to break down the modularity of these networks, as we observed a broad increase in functional connectivity between these networks with awareness.”

Tags: consciousnessneurosciencebiologymindbraincognition

Read original article » Back to category


Author: Guest
Posted: 2015-03-18
Brain is very complex structure and its functions are also complex- the insight into biological basis for consciousness will require further research Reply


Recent headlines

  • Posted in Software on 2018-03-16 11:03:28
    60.3% of harmful Android apps in 2017 detected more
    Posted in Hardware on 2018-03-16 11:00:28
    Big harpoon is 'solution to space junk' more
    Posted in Science on 2018-03-16 10:58:40
    Russia will beat NASA to mars and find water on the moon, more
    Posted in Business on 2018-03-14 07:02:30
    X Prize announces $10 million competition to more
    Posted in Business on 2018-03-14 06:57:20
    How to spot a cryptocurrency more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs, more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target more

Recent Blog Posts

  • Posted by AlexMuller
    Martian landscapes formed from sand 'levitating' on a more
    Posted by AlexMuller
    Scientists detect comets outside our solar more
    Posted by AlexMuller
    Advanced artificial limbs mapped in the more
    Posted by AlexMuller
    Bacteria have a sense of more
    Posted by AlexMuller
    Recurrent brain cancer: New hope with phase 1 clinical more

Login to your Account

Login to your PlanetTech Account here

Remember me

Create a New Account

You just need username and password

The following errors occured:
Verify password:
Remember me