Erin during a neurofeedback demo at London's BrainTrainUK. Photo: Erin Brodwin/Business Insider

New evidence supports a controversial technique that involves controlling a screen with your mind

US education chief Betsy DeVos advocates neurofeedback and invests in companies researching brain wave control

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Erin during a neurofeedback demo at London's BrainTrainUK. Photo: Erin Brodwin/Business Insider
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