Leggere la mente... si puo'!

[Marko91]

Researchers at ATR Computational Neuroscience Laboratories in Kyoto, Japan, say they've developed new analysis technology that can reconstruct the images inside a person's brain and display them on a computer screen, according to Pink Tentacle, an English-language blog that covers news from Japan. Pink Tentacle picked up the info from Japan's Chunichi Shimbun daily newspaper.

ATR scientists reported this week in the journal Neuron that they reconstructed various images study participants were viewing by using a functional magnetic resonance imaging (fMRI) to analyze changes in the flow of blood in the brain's visual cortex (a region of the brain where vision is processed). The researchers showed each subject 400 random black-and-white images for a period of 12 seconds each. As the images were viewed, the fMRI provided information about brain activity that a computer then analyzed to determine patterns that associated each brain reaction with a particular image.

Researchers compared the blood flow in brains of participants when they were viewing familiar images as well as when they sifted through new sets of images. In one case, when they were shown images of the letters used to spell the word "neuron," the fMRI accurately reconstructed and displayed the letters that participants were seeing based solely on their brain activity. "The results suggest that our approach provides an effective means to read out complex perceptual states from brain activity while discovering information representation in multivoxel patterns," the researchers write.

Although the technology is still in the early phases of development, it paves the way for applications that until now have only been the stuff of science fiction, such as reading minds for interrogation purposes, eavesdropping on dreams as people snooze or even providing a way for physically impaired people unable to speak to communicate via their brain waves. The researchers hope the technology will one day help doctors better understand the roots of and how to treat patients suffering from psychiatric disorders by "seeing" what's going on in their brains when they're, for example, hallucinating.

fMRI has been held up as a breakthrough technology for better understanding the brain. Researchers at Columbia University in New York City are using it to study what happens in the amygdala (the brain's almond-size fear center) when people are placed in scary situations. And researchers at the University of Sheffield in England believe that fMRI is more useful than polygraphs, which have been shown to have false positives and negatives, in determining whether someone is lying.

Other scientists are skeptical. Unlike a polygraph, an fMRI uses powerful magnetic fields to detect tiny changes in blood oxygen levels in the brain that are believed to be signatures of cognitive processes. But a Penn State researcher last year published a study in the American Journal of Law and Medicine questioning whether fMRI scans are reliable markers of veracity. He reported that fMRIs are open to broad interpretation and, as such, could provide images that suggest but do not really confirm if someone is lying, which could subject innocent victims to aggressive interrogation tactics.

Fico
Pensate ad un interrogatorio con una poliziotta e quella macchina che mostra tutto cio' che state "sognando".
Fonte:
http://www.sciam.com/blog/60-second-...nds-2008-12-12

[Giant Lizard]

bisogna vedere fin dove riescono a spingersi...e comunque finchè non ci sarà la possibilità di avere una macchina personale per registrare i propri sogni o pensieri...serve a ben poco. Il bello sta tutto lì. Loro possono ricercare quello che vogliono, ma tanto ora che viene commercializzata una cosa simile passano i secoli...

[gabi.2437]

Verrà commercializzata quando sarà pronta-->lo sarà dopo che avran capito come funge il tutto-->ovviamente ORA devono ricercare

[apocalypsestorm]

Immaginete un attimo se venisse messa sulla testa della vostra fidanzata... LoL
Chissa' quante "corna" verrebbero scoperte...
E finalmente si potrebbe vedere cosa pensano le femmine, oltre a buittifull...

[Banus]

Originariamente inviato da Marko91

Fico

Né i vari articoli che ho trovato su questo annuncio, né l'abstract della ricerca ne parlano, ma credo che la codifica neurale sia diversa da persona a persona, e quindi la macchina deve essere tarata sull'individuo prima di essere usata
Il riconoscimento di immagini nuove (invece di immagini già mostrate ai partecipanti) comunque è un passo avanti. E non mi immagino le applicazioni nel caso si riesca anche a realizzare il processo inverso (immagini generate direttamente nella corteccia)

[gigio2005]

Originariamente inviato da Giant Lizard

bisogna vedere fin dove riescono a spingersi...e comunque finchè non ci sarà la possibilità di avere una macchina personale per registrare i propri sogni o pensieri...serve a ben poco. Il bello sta tutto lì. Loro possono ricercare quello che vogliono, ma tanto ora che viene commercializzata una cosa simile passano i secoli...

wow....hai dato la definizione di RICERCA!