Hitachi has reportedly created and successfully tested an interface that allows users to turn a power switch on and off by using their brain only (Japanese)(English).Optical topography, a neuroimaging technique which measures the changes in blood hemoglobin concentration in parts of the brain responsible for mental activity, is utilized with Hitachi's brain-controlled interface.
Any significant changes monitored in the brain blood flow is then translated into voltage signals that are used for activating the model train's power switch.
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