A Carbon Microthread That Makes Contact with the Mind: Researchers have come up with what they call a “stealthy neural interface” made from a single carbon fiber and coated with chemicals to make it resistant to proteins in the brain.
The new microthread electrode, designed to pick up signals from a single neuron as it fires, is only about 7 micrometers in diameter. That is the thinnest yet developed, and about 100 times as thin as the conventional metal electrodes widely used to study animal brains...
He cautions, however, that it could be difficult to insert such fine, flexible electrodes into brain tissue, and to secure them. Schwartz notes that recordings broke down in many of the animals studied.
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