Researchers from the University of Oregon have grown rodent retinal neurons on a fractal-patterned electrode, one that mimics the repeating branching pattern in which neurons naturally grow. These neurons, which themselves are fractals, will connect better to a fractal-patterned electrode than they do to more traditionally shaped electrodes, allowing better signal transmission between the implant and the brain. A chip that stimulates a particular spot within the brain can help reduce tremors or even restore the ability to move, speak or see. These tiny electrodes could someday be implanted into the eye to restore sight in people with macular degeneration or other vision disorders, overcoming the challenges of connecting implanted electrodes with the existing neurons.
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