"University of Texas Arlington scientists have discovered a way to control the growth or repair of neurons and neuron circuits, using a non-invasive “neuronal beacon” (near-IR laser beam) — essentially rewiring brains, or even creating new ones." 

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Illustration of the “neuronal beacon” for guiding axon growth direction (credit: B. Black et al./Optics Letters)

Illustration of the “neuronal beacon” for guiding axon growth direction (credit: B. Black et al./Optics Letters)