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Part education tool, part neuroscience party trick, the Glassbrain app was first used on stage in 2012 on Mickey Hart, former drummer for the Grateful Dead, to show his brain reacting to music. A cap detects the different types of waves and signals pinging across the user's brain. The app then displays them in real time on a 3-D image built from brain scans taken earlier.
Each color represents source power and connectivity in a different frequency bands--theta, alpha, beta, gamma--and the golden lines are white matter anatomical fiber tracts. Estimated information transfer between brain regions is visualized as pulses of light flowing along the fiber tracts connecting the regions.Image credit: Adam Gazzaley, Roger Anguera Singla, Rajat Jain, Tim Mullen, Christian Kothe, John Fesenko, Oleg Konings, and Matt Omernick
