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Crowd Supply HEGduino is an affordable and accessible biofeedback kit. The HEGduino uses red and infrared light sensing to determine the changes in the blood-oxygen levels in your brain in real-time. Tracking blood-oxygen changes in your brain provides direct insight into your brain activity. HEGduino makes Hemoencephalography (HEG) biofeedback easy, affordable, and hackable. The "HEG" in HEGduino stands for Hemoencephalography, a non-invasive biofeedback method, similar to EEG neurofeedback. HEG detects regional changes in the brain’s energy consumption via changes in blood-oxygen. HEGduino enables you to see in real-time how your brain blood-oxygen levels respond to your thoughts and actions, resulting in a simple and elegant biofeedback system. You can easily affect and eventually control regional blood flow in your head by focusing, breathing, and relaxing, and watching the response on your screen.
The HEGduino is controlled and interacted with via Wi-Fi®, BLUETOOTH®, or USB. A browser app enables various ways to display and interact with the HEG data returned from your brain.
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For assembly refer to the Hackaday.io project page (https://hackaday.io/project/168788-hegduino). Assembly is fairly simple and the wireless interface seems to be quite stable. I found it necessary to place clear tape strips over the emitter and receiver to protect against water (sweat). Very interesting device and great interface options, definitely encourage others to explore the potential of this inexpensive biofeedback device.