Your Brain Knew It Would Click This Link Before You Did

A fascinating study published in Nature Neuroscience shows graphically that we make decisions before we are consciously aware of having made them.


(This schematic shows the brain regions (green)
from which the outcome of a participant's decision can be predicted
before it is made. Courtesy John-Dylan Haynes.)

The experiment was simple; hit the button with the left hand, or with the right? For up to seven seconds, the test subjects showed increased activity in their frontopolar cortex, a brain region associated with high-level planning. Soon afterwards, activity moved to the parietal cortex, a region of sensory integration. Finally, the button was pushed. MRIs were used to measure brain activity; researchers were able to consistently predict which hand would be used to push the button.

"Your decisions are strongly prepared by brain activity. By the time consciousness kicks in, most of the work has already been done," said study co-author John-Dylan Haynes, a Max Planck Institute neuroscientist.

Although this is not a prediction, the situation is summed up neatly in the 2005 short story Second Person, Present Tense by Daryl Gregory. The story provides a fascinating examination of the problem of identity.

"They wired up patients and told them to lift one of their fingers, move it any time they wanted. Each time, the brain started the signal traveling toward the finger up to 120 milliseconds before the patient consciously decided to move it. Dr. S said you could see the brain warming up right before the patient consciously thought, now."

Read more details about how Brain Scanners Can See Your Decisions Before You Make Them; thanks to Conor for the tip on the article and the short story. Be sure to read Second Person, Present Tense by Daryl Gregory for yourself.

Scroll down for more stories in the same category. (Story submitted 4/16/2008)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 3 )

Related News Stories - (" Medical ")

Purdue Pharma Ready To Profit From OxyContin Use Or Addiction Recovery
'It may be organic damage. It may be permanent. Time'll tell, and only after you are off Substance D for a long while.' - Philip K. Dick, 1977.

Organaut! Russians 3D Print Living Tissue In Space
'For a while your colonists will have to come up [to orbit] to the Hospital...' - Larry Niven, 1968.

MIT Scientists Create 'Peek-a-Boo Prober' From Jetsons
Well, George, it's the latest thing.

Wound Healing With Wearable Nanogenerators
'... forcing the energy transfer which allowed him to ... erase the other internal-external damage.' - Frank Herbert, 1972.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

North Focals Smart Glasses Provide Augmented Reality In Style
'The world ... is drenched in unfamiliar information all the way to the horizon.'

Tesla Driver Caught Napping Behind The Wheel
'Mary Risling settled back for a little nap...'

Hayabusa 2 To Begin Asteroid Mining
'We must dig down, and then doubtless we shall find the metal.'

Ionocraft Drone Powered By Electrohydrodynamic Thrust
'He saw one hiss by him as he rounded the corner, trailing a short whip antenna...'

Purdue Pharma Ready To Profit From OxyContin Use Or Addiction Recovery
'It may be organic damage. It may be permanent. Time'll tell, and only after you are off Substance D for a long while.'

BloxVox Mutes Cellphone Convos
It's the polite thing to do, and has been the polite thing to do for about four generations.

Superfast Replicator: Volumetric Additive Manufacturing
I can't wait. Bring it on.

DNA May Contain Malware
'You were told to embed the logical pathogen.'

I Can't Resist Worm Robots
'Seen close it was not completely flexible...'

Rplate Digital License Plates Now Legal In Michigan
'Gragg's digital ink license plates ...'

Can Musk Starship Astronauts Use Magnetic Boots?
'Walking awkwardly in the magnetic boots that held him to the black mass of meteoric iron...'

Giant Dolphin Spotted On Jupiter!
'Now at last he could appreciate its real size and complexity...'

Musk's Starship An SF Fan's Dream Come True
Perfect for testing, perfect for fans!

TinyMobileRobots Are Sewer Sentinels
Every movie monster gets its start someplace.

Fishy Facial Recognition Now Possible
'Palenkis can identify random line patterns better than any other species in the universe.'

Spicy Tomatoes Created With Genetic Engineering
How about mashed potatoes and brown gravy?

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.