HEGduino: Brain blood flow biofeedback meets affordable IoT technology
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Measure real-time brain blood-oxygen levels!HEGduino is an affordable and accessible biofeedback kit. It uses
red/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.
Visit us now at HEG Alpha!
Hemoencephalography and "Brain Pushups"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. With a
bit of practice with the biofeedback provided by HEGduino, you can
exercise your brain and make it healthier with this type of physical therapy.
It takes less than ten minutes of using the device to learn how to change your brain blood flow directly.
Neurons don’t store their energy, so regional brain activity is closely tied to changes in
blood-oxygen - the fuel - where healthy blood flow patterns (which carry the oxygen to your cells as needed) are
crucial for a high-functioning and growing brain. For more expanded information
on how this works, check out this
section
below.
HEGduino & Biofeedback Applications
Brain Exercise: Do "brain pushups" to improve brain blood-oxygen
levels as an educational, clinical, or hobbyist tool.
Stress Monitoring: Prevent student or professional burnout.
Research: Measure neocortical functioning as correlated via
blood-oxygen ratio changes.
Biohacking: Modify HEGduino and its app to fit your need. It's
open source!
Competitive Gains: Improve long-term cognition and awareness for
playing your favorite sports or E-sports.
Technical Specifications
Controller Board:
ESP32-based control with either
Adafruit Huzzah32 (4 MB flash but less I/O)
WeMos Lolin32 V1.0.0 (4 MB flash but more I/O)
ADS1115 16-bit 860 sps ADC
I/O breakouts for a maximum of:
32 Inputs / Outputs
26x digital pins (3.3 V) - all PWM capable (two occupied by LEDs)
18x analog pin
3x UART
3x SPI
Sensor Board:
Flexible circuit board to conform to the shape of your head and headgear
650 nm 50 mA red LED
950 nm 50 mA IR LED
OPT101 monolithic photodiode
Connected to receiver by CAT3 connectors/wire
Assembled HEGduino; Lolin32 version.
HEGduino kit; Huzzah32 Feather version.
Interactive Biofeedback App
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