The IndependentThe Independent
Researchers from Osaka University used electrocorticogram (ECOG) recordings to display readouts of images that people were imagining (Getty Images)
Researchers from Osaka University used electrocorticogram (ECOG) recordings to display readouts of images that people were imagining (Getty Images)

Scientists have figured out a way to decipher the pictures people see in their mind.

Researchers from Osaka University in Japan worked with patients with epilepsy who already had electrodes fitted in their brains, using technology to capture their brain waves while they were thinking about an image.

The participants were told to look at an image while imagining a completely different image from other categories, such as a landscape or a human face.

The researchers were able to detect brain activity in real-time during the experiment, which allowed them to determine what the person was imagining rather than what they were looking at.

Ryohei Fukuma said that attention is known to change neural representations of images.

Electrocorticogram (ECoG) recordings were taken from 17 patients with epilepsy who had implanted subdural cortical electrodes related to visual perception (Osaka University)
Electrocorticogram (ECoG) recordings were taken from 17 patients with epilepsy who had implanted subdural cortical electrodes related to visual perception (Osaka University)

The scientists were able to create a clear distinction between the imagined image and the viewed image with remarkable accuracy.

The results showed a relationship between brain activities when people look at images and when they imagine them.

The imagined images were not provoked by the actual images the patients viewed. When the patients received feedback, they could be even more distinct.

The technology could be used to develop a communication device for severely paralysed patients.

Over time, the ability to use devices that rely on motor control to communicate decreases for patients with the disease.

The journal Communications Biology published the research.

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