These Flexible Electrodes Could Help Monitor the Brain Better Than Ever

Electrodes currently used to directly monitor the brain are made from solid materials that can damage the tissue they’re inserted into. But a new type of flexible electrode may change that. The best way to measure brain signals is to place electrodes directly into the brain. But existing devices are either made from entirely solid materials or, even if they are flexible, contain solid chips so are at least stiff in places. When inserted into the brain, such devices can rub against the tissue and slowly damage it, which can be a problem for long-term monitoring. Now, though, a team from Lund University in Sweden has developed the flexible electrodes pictured above. Made from gold which measures just 10 microns in thickness, the electrodes are laser cut to shape and…


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