• Shape-conforming 3D bioelectronic mesh maps 91% of lab-grown mini brain activity New 3D bioelectronic device wraps neural organoids and maps nearly all brain-like activity. • Scientists have built a soft, three-dimensional electronic device that can wrap around lab-grown human mini brains and record activity across nearly their entire surface. • The system captures electrical signals from 91 percent of a neural organoid, overcoming a major limitation in how researchers study these brain-like tissues. • Human neural organoids, grown from stem cells, are increasingly used to model brain development and disease. • They form interconnected neural circuits and produce coordinated electrical rhythms. • But most existing recording tools are flat and rigid, allowing scientists to sample signals from only a handful of locations.
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