Science Fiction
Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 |
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 ")
Heart Patches Grown In The Lab Repair Hearts
I'm hoping that this procedure becomes a normal part of medical practice!
Pixel Watch 'Loss of Pulse Detection' And Philip K. Dick
'He carried on his person a triggering mechanism sensitive to his heartbeat.' - Philip K. Dick, 1965.
ErythroMer Artificial Blood
'My chemists are all working on the preparation of the artificial blood.' - Dr. David H. Keller, M.D.
MouthPad Supports Head And Tongue Tracking
'The operation that had transformed half his body... had located the control switchboard in his teeth.'- Alfred Bester, 1956.
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.
Science Fiction
Timeline
1600-1899
1900-1939
1940's 1950's
1960's 1970's
1980's 1990's
2000's 2010's
Current News
Taikonauts Exercise In China's Tiangong Space Station
'Joe got out the gravity-simulator harnesses...'
Korean Exoskeleton Suit F1 Helps You Put It On
'Better late than never.'
Have AI Researchers Given Up On 'Bio-Babies'?
'You couldn't have the capstone without the pyramid to hold it up.'
Bunker Busters and Bore-Pellets
'The first revelation of the new Soviet bore-pellets.'
'Spikeless' Brand Swizzle Stick Detects Spiked Drinks
'the unobtrusive inspections with tiny remote-cast snoopers...'
Heart Patches Grown In The Lab Repair Hearts
I'm hoping that this procedure becomes a normal part of medical practice!
Humanoid Robots Spotted In Homes Performing Household Chores
'... nothing was perfected until M. Pantalon announced the completion of his automatic valet.'
Musk Proposes Sites For Martian Cities
'...its streets were of remarkable width, with few or no buildings so high as mosques, churches, State-offices, or palaces in Tellurian cities.'
Bambot Open Source Cheap Delivery Robot
'Not since the time he rewired the delivery robot...'
Robot Collective Acts Like A Smart Material
'...it was all composed of tiny, identical cubes, carefully laid to form a tilelike surface.'
Vipera Electric Skis From Frigid Dynamics
'JOAN strapped on her power-skis...'
Pixel Watch 'Loss of Pulse Detection' And Philip K. Dick
'He carried on his person a triggering mechanism sensitive to his heartbeat.'
Nuclear Plant Restarted To Power AI To Feed Us Dreams
'...Anything was possible in my imaginary environment.'
SpaceX's Starman Tesla Roadster In Space
'Somewhere in space, a chrome and blue automobile raced the green light of Earth.'
Pivotal Blackfly Electric Aircraft Lifts And Hovers
'That explains how it was so easy for me to remain motionless in midair...'
CORLEO Robotic Horse Concept Looks Ready To Ride
Imagine digging your heels in to a steam horse!
