Scientists have long been looking for a way to implant electrodes that can interact with neurons in the brain. In their opinion, if successful, it will be possible to defeat many severe neurological disorders, including Parkinson's disease.
In January, an international team of researchers from Italy and the UK took a huge step forward. Graphene has once again become a "magic wand", which, as it turned out, can successfully interact with neurons.
At the beginning, microelectrodes based on tungsten and silicon, graphene substrates implanted in the brain, were chosen as the objects of the experiment. The results were very encouraging, but not without negative side effects.
The body reacted to the appearance of the implants by forming scars, which significantly reduced the electrical signals from the brain. In view of the rigidity of the material, things were going to complete rejection, since it turned out to be unsuitable for a semi-liquid organic environment.
Then the scientists decided to make electrodes from pure graphene, which immediately gave a positive effect. In an experiment on rats, graphene electrodes quickly found a "common language" with neurons in the process of transmitting electrical impulses.
Biocompatibility of graphene is a direct path to the creation of graphene microelectrodes, with the help of which it will be possible to restore the control functions of the affected brain, in particular, the lost sensory functions in the treatment of various paralysis.