Imagine changing sentences? | Swiss brain implant chip interprets letters

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91% accuracy, not yet clinically available Support EJ Tech

go through Hong Kong Economic Times August 29, 2024

originalPublished in Hong Kong Economic Times Financial NewsEJ Tech Innovation Lab“

Swiss Federal Institute of Technology in Lausanne (EPFL) develops next-generation micro-brain-machine interface (MiBMI)[Photo]micro-silicon chipsetThe total area is 8 square millimetersAfter minimally invasive implantation, when the subject imagines drawing a letter, the system will interpret the brain’s neural signals and translate the idea into text. It is said that the accuracy rate of word recognition is as high as 91.3%. The paper was published in an academic journalIEEE Solid-State Circuits Magazine.

Compared with tweezers and alligator clips, it can be seen that the MiBMI chip is very small. (EPFL online picture)

91% accuracy, not yet clinically available

When developing the chip, researchers found that when the subjects imagined writing each letter by hand in their minds, the brain activity contained very specific neural markers, called “unique neural codes” (DNCs).

The chip can currently decode 31 different characters, and the system is expected to be able to decipher up to 100 characters.

However, the chip has not yet entered the clinical stage. The team is testing the system in different environments, such as speech decoding and motion control. The goal is to develop a multifunctional brain-computer interface (BMI) to significantly improve the quality of life of patients with amyotrophic lateral sclerosis (ALS, commonly known as Lou Gehrig’s disease) and spinal cord injuries.