Watch What People Are Seeing Via Brain Scanning

Researchers at Purdue have developed a system that shows what people are seeing in real-world videos; the video is decoded from their fMRI brain scans.


(Human brain decoded)

Convolutional neural network (CNN) driven by image recognition has been shown to be able to explain cortical responses to static pictures at ventral-stream areas. Here, we further showed that such CNN could reliably predict and decode functional magnetic resonance imaging data from humans watching natural movies, despite its lack of any mechanism to account for temporal dynamics or feedback processing. Using separate data, encoding and decoding models were developed and evaluated for describing the bi-directional relationships between the CNN and the brain. Through the encoding models, the CNN-predicted areas covered not only the ventral stream, but also the dorsal stream, albeit to a lesser degree; single-voxel response was visualized as the specific pixel pattern that drove the response, revealing the distinct representation of individual cortical location; cortical activation was synthesized from natural images with high-throughput to map category representation, contrast, and selectivity. Through the decoding models, fMRI signals were directly decoded to estimate the feature representations in both visual and semantic spaces, for direct visual reconstruction and semantic categorization, respectively. These results corroborate, generalize, and extend previous findings, and highlight the value of using deep learning, as an all-in-one model of the visual cortex, to understand and decode natural vision.


(Watching in near-real-time what the brain sees) Visual information generated by a video
(a) is processed in a cascade from the retina through the thalamus (LGN area) to several levels of the visual cortex
(b), detected from fMRI activity patterns
(c) and recorded. A powerful deep-learning technique
(d) then models this detected cortical visual processing. Called a convolutional neural network (CNN), this model transforms every video frame into multiple layers of features, ranging from orientations and colors (the first visual layer) to high-level object categories (face, bird, etc.) in semantic (meaning) space (the eighth layer). The trained CNN model can then be used to reverse this process, reconstructing the original videos even creating new videos that the CNN model had never watched.
(credit: Haiguang Wen et al./Cerebral Cortex)

In No, No, Not Rogov!, a 1958 story by Cordwainer Smith, an espionage machine is described that would actually let you see what another person saw by probing their brain:

He had then turned away from the reception of pure thought to the reception of visual and auditory images. Where the nerve-ends reached the brain itself, he had managed over the years to distinguish whole packets of microphenomena, and on some of these he had managed to get a fix.

With infinitely delicate tuning he had succeeded one day in picking up in picking up the eyesight of their second chauffeur... and had managed to see through the other man's eyes as the other man, all unaware, washed their Zis limousine sixteen hundred meters away...
(Read more about Cordwainer Smith's espionage machine)

Via KurzweilAI.

Scroll down for more stories in the same category. (Story submitted 11/9/2017)

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 ( 0 )

Related News Stories - (" Medical ")

Skin Electronics Can Show Electrocardiogram
'... the young men in the streets who applied polyimde OLED body film to their bared shoulders.' - Chen Qiufan, 2019.

Neurodevices For Consumers? Neuroethicists (And Philip K Dick) Say 'Caveat Emptor'
'They tried to use it today and it wouldn't work. No colors and no ceph patterns, neither one...' - Philip K. Dick, 1977.

BrainEx Restores Some Activity To Severed Pig Head
'... they placed the brain in a special solution, having all the properties of Nursing the brain cells.' - Edmond Hamilton, 1929.

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.

 

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

China Deploys Robot Traffic Police
'The robot came up smooth and fast as a rocket...'

Better Than Dune Chromoplastic? This Guy Might Have Done It
'But when Old Father Sun departs, the chromoplastic reverts to transparency in the dark.'

Gather, An AI Warehouse Inventory Drone Startup
'It extended three of its tiny arms sideways to lock onto the registration pins...'

China's Artificial Intelligence-Enhanced Education
'The grey gas not only cut off his vision, but also his other senses...'

Orbital Manufacturer 'Made in Space' Gets $73 Million NASA Contract
'Mass-produced in the orbiting factories...'

Soli Gesture Tech Will Be In Google Pixel 4
'I enjoy watching this way, but - He waved his hand and the circuit switched abruptly.'

Uber Eats Pairs Cars With Drones
Fresh grub? Let's hope they aren't delivering grubs.

Space-Based Solar Power Roundup
SF writers popularized and elaborated on this idea a generation before the first patents were filed.

Lost Language Meanings Found By Machine Learning
'The autopilot would need data before it could begin a translation...'

'Aerogel' Sheets For Martian Gardens
'Sealed to the ground along all the sides, Honey, he growled...'

France's 'Red Team' Of Science Fiction Authors
'They're the only experts we have.'

Dim The Sun With Stratospheric Controlled Perturbation Experiment
'Those twin volcanoes; d'ye see them, Mr. Renner?'

Mashambas Skyscraper Farm Design Wins
'...a towering eighty-story structure like the office In-and Out baskets stacked up to the sky.'

Self-Driving Tractors From China Plan Ahead
'Machines that seemingly with full consciousness walked out into the fields to do their daily work.'

Jet-Powered Hoverboard Works!
L'audace, l'audace, toujours l'audace!

Nobe 3-Wheel Electric Vehicle Parking Like I, Robot
Spidercar, Spidercar, does whatever a spidercar does.

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.