A study recently published in Nature Communications demonstrates that some of the neural sensors we co-developed with our colleagues at ICN2 based on CVD graphene, can detect brain signals in a wide frequency band, from extremely low frequencies to high frequency oscillations. The sensor is biocompatible and could be used to measure and predict brain states.

The technology was developed as part of the EU Graphene Flagship and is expected to be commercialized for the neuroscience research market by our industrial partners Multi Channel Systems GmbH, Germany.

More details in the Press Releases:
https://icn2.cat/en/news/4662-graphene-based-neural-interface-allows-improved-brain-activity-mapping
https://graphene-flagship.eu/graphene/news/graphene-sensors-read-low-frequency-neural-waves-associated-with-distinct-brain-states/

Or you may wish to read the paper here.