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PostSubject: Scientists 'read dreams' using brain scans   Fri Apr 05, 2013 9:38 am



Scientists have found a way to "read" dreams, a study suggests.


Researchers in Japan used MRI scans to reveal the images that people were seeing as they entered into an early stage of sleep.

Writing in the journal Science, they reported that they could do this with 60% accuracy.

The team now wants to see if brain activity can be used to decipher other aspects of dreaming, such as the emotions experienced during sleep.

Professor Yukiyasu Kamitani, from the ATR Computational Neuroscience Laboratories, in Kyoto, said: "I had a strong belief that dream decoding should be possible at least for particular aspects of dreaming... I was not very surprised by the results, but excited."

Brain wave


People have been trying to understand dreams since ancient Egyptian times, but the researchers who have carried out this study have found a more direct way to tap into our nighttime visions.

The team used MRI scans to monitor three people as they slept.

Brain activity correlated with the images that people saw in their dreams
Just as the volunteers started to fall asleep inside the scanners, they were woken up and asked to recount what they had seen.

Each image mentioned, from bronze statues to keys and ice picks, was noted, no matter how surreal.

This was repeated more than 200 times for each participant.

The researchers used the results to build a database, where they grouped together objects into similar visual categories. For example, hotel, house and building were grouped together as "structures".

The scientists then scanned the volunteers again, but this time, while they were awake and looking at images on a computer screen.

With this, they were able to see the specific patterns of brain activity that correlated with the visual imagery.

more -- http://www.bbc.co.uk/news/science-environment-22031074
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