A chip that is 100% biocompatible to measure brain activity
Interpreting the signals emitted by the brain and translating them into commands usable by humans is a goal that researchers have been pursuing in the development of what is known as brain-machine interfaces. With respect to health, these interfaces could be used by people suffering from paralysis. Up to now, researchers have encountered technological difficulties because the sensors used to record brain activity do not yet do so with enough accuracy.
With the support of the Bioelectronics Department of the St Etienne Ecole des Mines, a research team headed by Christophe Bernard of Inserm Unit 1106 “Institut de neurosciences des systèmes” have designed a system for sensing brain activity that is 100% biocompatible and made of organic matter. The medium, which is only a few microns thick, is as thin and flexible as cellophane, and yet very tough.
The model was tested on an animal suffering from epilepsy. The quality of the brain signal recorded was 10 times better than the traditional brain activity recording systems. The research was published in the Nature Communications journal.