UC Berkeley Researchers Reconstruct YouTube Videos from Brain Activity

by Radford Castro of  lazytechguys.com

“Think Minority Report because this one is a trip. Now, the video you’re about to see is somewhat disturbing because what the university has accomplished is short of astounding. While the quality of the videos they recreate isn’t good at all, it’s still scary that an image can still be displayed.

How do they do this?

The study had the participants in an MRI machine for hours at a time watching YouTube videos. The data gathered by the MRI machine was used to create a computer model that matched the features of the video like colors, shapes, and movements with the brain activity.

The video was recreated by looking at slight changes in blood flow to visual areas of the brain were used to predict what was on the screen at the time. The team thinks that one day the tech could be used to broadcast imagery that plays in the mind independent from vision. You know what? Just watch it.” Source: LTG

Read More:
Lazy Tech Guys: http://www.lazytechguys.com/news/uc-berkeley-has-found-a-way-to-pull-videos-from-your-brain/

For more information about this work: http://gallantlab.org

For the paper (Nishimoto et al., 2011, Current Biology) go to:http://dx.doi.org/10.1016/j.cub.2011.08.031

Reconstructing visual experiences from brain activity evoked by natural movies (Current Biology in press). This paper presents the first successful approach for reconstructing natural movies from brain activity.

Encoding and decoding in fMRI (Neuroimage 2010, PDF 841KB). This paper reviews the current state of “brain decoding” research, and advocates one particularly powerful approach.

Bayesian reconstruction of natural images from human brain activity (Neuron 2009, PDF 3.7MB). This paper presents the first successful approach for reconstructing natural images from brain activity.

Identifying natural images from human brain activity (Nature 2008, PDF 5.4MB). This landmark paper shows that far more information can be recovered from brain activity than was thought previously.

Modeling low-frequency fluctuation and hemodynamic response timecourse in event-related fMRI (Human Brain Mapping 2008, PDF 717KB). This technical paper focuses on optimal quantitative modeling of fMRI data.

Topographic organization in and near human visual areas V4 (Journal of Neuroscience 2007, PDF 4.5MB). This paper provides a detailed retinotopic mapping study of early human visual areas.

Nanocables and Graphene Poised to Light The World

Researchers at Rice University have developed an advanced carbon nanotube cable that could replace conventional copper cabling. The carbon nanotube wire is light weight and can transmit electrical power over great distances far more efficiency than copper cables. Carbon nanotubes or CNT hold great promise for a whole range of commercial applications from aerospace to microprocessor design. One of the challenges scientists and engineers face in developing CNT electronics applications is the inability to work the CNT in to an ordered array, something many researchers have worked toward over the last 17 years. CNTs rival material Graphene on the other hand can be intergraded into electronics with far less hassle and is a prime contender for the next generation power grid.

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Data Storage Goes Infinite With Bitcasa

This is one of the most innovative services we have seen in a long time, it’s called Bitcasa it provides secure, real-time streaming of all your data seamlessly to the cloud and does so on any device. If you have a Mac, PC, or Linux Box, Bitcasa keeps your data safe and secure. It uses a encryption method called Convergent Encryption to secure customer data which is what makes Bitcasadifferent from other cloud storage offerings. Convergent Encryption uses a function of the hash of the plaintext of a chunk as the encryption key: any client encrypting a given chunk will use the same key to do so, so identical plaintext values will encrypt to identical ciphertext values, regardless of who encrypts them. (Storer, Greenan, Long, Miller) According to Bitcasa CEO Tony Gauda “when you encrypt data, I have a key and you have a key. And let’s say that that these are completely different. Let’s say that we both have the exact same file. I encrypt it with my key and you encrypt it with your key. Now the data looks completely different because the encryption keys are different. Well, what happens if you actually derive the key from the data itself? Now we both have the exact same encryption key and we can de-dupe on the server side.” (Gauda) In his pitch at Disrupt Gauda demonstrated the ability to play two HD videos using Bitcasa. This service could be a major game changer for consumers that never want to worry backing up their data or moving their data from old devices to new devices. The enterprise sector could also benefit from this technology given the ever expanding need to provide its user base with high volume cloud storage solutions.

For other news from Disrupt 2011 check out LTG’s coverage of the event. And check out the LTG podcast.


Read More: http://techcrunch.com/2011/09/18/bitcasa-explains-encryption/

Convergent Encryption :  Secure Data Deduplication by Mark W. Storer Kevin Greenan Darrell D. E. Long Ethan L. Miller

Storage Systems Research Center University of California, Santa Cruz {mstorer,kmgreen,darrell,elm}@cs.ucsc.edu

So You Are A Gamer?

Despite over 25 years of existence, billions in profits and millions of players worldwide video games continue to struggle for respectability and mainstream recognition as a legitimate form of entertainment not just for adolescents but people of all ages and from all walks of life. The players are consistently stereotyped in popular media as introverted, overweight, unemployed people (largely male) that lack social skills, live in their parents basements and are hopelessly emotionally bound to their computers, the internet and their video games. But the truth about gamers, who they are and why they play may surprise you. The individuals that comprise gaming culture is estimated in the tens of millions, it is global, competitive, highly influential and growing. Despite this growth and increasing popularity, gaming is largely ignored by sociologists. Video games are used and feared by governments, parents groups and most notably by people that have never experienced gaming culture. The documentary “Gamer Revolution” takes a look at gamer culture in the United States and around the world.
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