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Carbon nanotubes on the brain

The performance of metal electrodes used for studying brain function and relieving the symptoms of medical conditions can be significantly improved by coating them with carbon nanotubes.

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Figure 1: Spectrographs from 20 seconds of brain activity recorded from the motor cortex of an anaesthetized rat using bare metal electrodes (left) and nanotube/polypyrrole-coated electrodes (right) over two different frequency ranges: 0–300 Hz (lower panel) and 300–3,000 Hz (upper panel).

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Parpura, V. Carbon nanotubes on the brain. Nature Nanotech 3, 384–385 (2008). https://doi.org/10.1038/nnano.2008.193

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