Ionic hydrogels can achieve the same kind of memory mechanics as more complex neural networks," says first author and robotics engineer Vincent Strong of the University of Reading. "We showed that hydrogels are not only able to play Pong; they can actually get better at it over time.
Our paper addresses the question of whether simple artificial systems can compute closed loops similar to the feedback loops that allow our brains to control our bodies," says corresponding author and biomedical engineer Yoshikatsu Hayashi. "The basic principle in both neurons and hydrogels is that ion migration and distributions can work as a memory function that can correlate with sensory-motor loops in the Pong world.
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