A brain implant translated the thoughts of a paralyzed person into text with over 90% accuracy

Accuracy over 90%. A brain implant translated the thoughts of a paralyzed person into text, reports H.B.Techno.

Photo: Shutterstock

The man, paralyzed below the neck due to a spinal cord injury in 2007, was able to transmit his thoughts thanks to a system of brain implants.

The new technology transforms his imaginary handwriting into real text with high precision, researchers from the United States said.

In the experiment, a man named T5 in the study, who was 65 years old at the time of the study, concentrated on creating text, thinking about creating letters with an imaginary pen on imaginary paper.

As he did so, electrodes implanted into his motor cortex recorded signals from his brain activity, then interpreted by algorithms running on an external computer, decoding the imaginary trajectories of the pen's movement.

Scientists were able to trace 26 letters of the English alphabet and some basic punctuation marks.

"This new system harnesses both the rich neural activity recorded by the electrodes and the power of language models that, when applied to neural-decoded letters, can create fast, accurate text," said study's first author Frank Willett, a Stanford University scientist.

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In tests, this person was able to achieve a writing speed of 90 characters per minute (about 18 words per minute) with an accuracy of about 94 percent (and up to 99 percent accuracy with autocorrect enabled).

Not only is this figure significantly higher than in previous experiments, it almost matches the typing speed of smartphone users in this age group of men.

“We learned that the brain retains the ability to imagine precise movements for a full decade after the body has lost the ability to perform those movements,” Willett says.

The researchers also note that a similar technique in the future can be used for brain injuries and recovery from a stroke.

Earlier it was reported that scientists were able to completely cure the patient from a severe form of depressive disorder, which was not subjected to strong drugs and electroconvulsive therapy. A new brain implant helped them in this.

Deep brain stimulation through an intracranial implant may become a new milestone in the treatment of especially severe forms of depression.

The very idea of ​​treating with electrical discharges is not new - various attempts to use deep brain stimulation have previously shown mixed results.

Scientists from the University of California have suggested that the reason for the ineffectiveness of this method is that the existing implants work continuously, constantly stimulating only one or both sides of the brain.

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They created a device that differs from their counterparts in that it not only stimulates the brain, but also monitors the electrical activity inside it.

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