On the way to telepathy
A system has been created that can turn a person's thoughts into text messages
DailyTechInfo based on KurzweilAINetwork: ‘Brain-to-Text’ system converts speech brainwave patterns to text
An international group consisting of American and German researchers has made progress in deciphering the signals that occur in the human brain during natural continuous colloquial speech. And the data of this decoding were used to transform the "mental" speech into its textual representation with a fairly high degree of accuracy. Further development of this technology can be the first step towards creating systems of thought control of computers and other equipment, new technologies of communication between people and much more.
The created "Brain-to-Text" system recorded signals read using a matrix of ECoG electrodes (electrocorticographic) located in the appropriate places opposite the frontal and lateral areas of the cerebral cortex. The experiments involved seven voluntary participants who were in one of the medical institutions where they underwent a course of clinical treatment of their existing nervous diseases, including epilepsy.
All participants read aloud and loudly a standard text, which consisted of a limited set of certain words. The collected data of brain signals were "fed" to a computer, which, using computer learning and analysis algorithms, extracted the most likely sequence of signals corresponding to certain words. After that, using a fairly simple algorithm, the data was converted to a text format.
Unfortunately, the accuracy of such a system still leaves much to be desired. Under normal conditions, the number of errors in determining the words spoken by a person was at the level of up to 25 percent. And if the patient, for some reason, was unable to pronounce words absolutely correctly, changing some phonemes during pronunciation, the number of errors increased to 50 percent.
But scientists are not going to stop at the results achieved. They explain the high percentage of errors by the fact that the data analysis was carried out using universal software, and not specialized, which should work much more efficiently. When such highly specialized software is created, the percentage of errors committed by the system will decrease dramatically and such systems will become the "bridge" that will allow you to communicate with people who are unable to talk for various reasons.
It should be noted that these works were carried out by order of the Research Department of the US Army with the support of several scientific foundations. Brain signal recordings were carried out by specialists at the Albany Medical Center, Albany, New York, and signal processing and automatic speech recognition algorithms were developed at the Cognitive Systems Lab of the Karlsruhe Institute of Technology (KIT), Germany.
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19.06.2015