Memory Implant Records And Plays Back

A brain implant capable of recording and playing back the electrical activity of neurons has been constructed by researchers from USC and Wake Forest University.

A primary objective in developing a neural prosthesis is to replace neural circuitry in the brain that no longer functions appropriately. Such a goal requires artificial reconstruction of neuron-to-neuron connections in a way that can be recognized by the remaining normal circuitry, and that promotes appropriate interaction. In this study, the application of a specially designed neural prosthesis using a multi-input/multi-output (MIMO) nonlinear model is demonstrated by using trains of electrical stimulation pulses to substitute for MIMO model derived ensemble firing patterns...

These integrated experimental-modeling studies show for the first time that, with sufficient information about the neural coding of memories, a neural prosthesis capable of real-time diagnosis and manipulation of the encoding process can restore and even enhance cognitive, mnemonic processes.
(A cortical neural prosthesis for restoring and enhancing memory)

Here's a summary of the basic experiment:

  • The rats first practiced a simple memory task: To get a refreshing drink of water, hit one lever in a cage, then—after a short distraction—hit the other. They had to remember which lever they’d already pushed to know which one to push the second time,.
  • As the rats did this memory task, an array of electrodes recorded signals between two subregions of the hippocampus, called CA1 and CA3, which are involved in storing new information in long-term memory.
  • The researchers then gave the rats a drug that kept CA1 and CA3 from communicating. The rats still knew the general rules of the task—press one lever then the other, get water—but couldn’t remember which lever they’d already pressed.
  • When the scientists played back the neural signals from CA1 they’d recorded earlier, however, the rats again remembered which lever they had hit, and pressed the other one.
  • When researchers played back the signals in rats not on the drug—amplifying the regular signals from CA1—the rats made fewer mistakes and remembered which lever they’d pressed for longer.
    (Discover Magazine)

Fans of sf writer Lois McMaster Bujold recall the memory biochip mentioned in her 1986 novel Shards of Honor, which allowed the user to play back memories at will.

Thanks to an anonymous reader for writing in with the story and the reference.

Scroll down for more stories in the same category. (Story submitted 6/21/2011)

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 ")

Targeted Neuroplasticity Training For 'Downloading Skills'
'I know kung-fu.'

Will The FDA Approve This Antiaging Drug?
'So what we're looking for now is... an anti-agathic, an anti-death drug.' - James Blish, 1951.

EVE Artificial Womb For Lambs (For Now)
'In the crimson darkness, stewing warm on their cushion of peritoneum and gorged with blood-surrogate and hormones...' - Aldous Huxley, 1932.

Bees Royal Jelly Helps Wounds Heal Faster
'An alien drug... used by an insect race.' - Clifford Simak, 1961.

 

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

effie Automated Ironing Appliance
'Household Automata received an urgent task to develop production units of бытовые тканевые разглаживатели - a household fabric smoother.'

BabyX AI Real Enough For You
'...what's to keep me from showing face, Man? I'm showing a voice this instant... I can show a face the same way.'

We Could Downgrade Puerto Rico - And Thereby Save It
'It was cheaper to pay the refugees to go without up-to-the-minute equipment.'

Pegasus, Nvidia Supercomputer For Autonomous Driving
'...a 2045 convertible with a Hennis-Carleton positronic motor and an Armat chassis.'

Loihi Chip Mimics Human Brain's Neurons And Synapses
'You can hook a Thorsen tube into a control circuit... and the tube will "remember" what was done and can direct the operation...'

Self-Assembling Bacteria Build A Pressure Sensor
Nature is a master of fabricating structured materials consisting of living and non-living components.

3D Printed Artificial Muscles Are Stronger Than Yours
Bots don't need to work out.

Fog Computing (AKA Edge Computing) Ad Hoc Networks
'The tiny devices chirped their impulse codes at one another...'

Dubai Scorpion Police Hoverbike Ready To Pull Young Kirk Over
'Is there a problem, officer?'

Korean Tesla Model S Video 'Excelsior' Is Indeed Our Motto
'Improving man by bringing him close to Nature, while they combine the sensations of coasting with the interest of seeing the country well...'

HEXA Robotic Help For Plants
Then some unknown race had chanced upon the dreamers and decided to "help them out."

DIY Robot Shoots You In The Face
'...there were automatic guns that fired ligamine darts.'

A Bayesian Approach to Safe Imitation Learning For AIs and Robots
Um, how about that pension for the humans who serve as the models for robot behavior?

Qoobo Headless Robotic Therapy Cat Was Anne McCaffrey's Idea
'...used as surrogates in intense dependency cases.'

Autonomous Cars Talk To Each Other At MCity
'My cars talk to one another.'

PUFFER Robots - From Philip K DIck's Second Variety?
'Across the ground something small and metallic came, flashing in the dull sunlight of midday.'

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.