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Posted May 1st 2012 2:30 P.M. by Brian Benchoff
It seems Charles Moyes and Mengxiang Jiang won't suffer from the sore wrists and thumbs from an Atari controller any longer. They built a version of Pong played by concentrating and relaxing while wearing an EEG headset.
Right now, there's only enough hardware for one player; when the player operating the red paddle concentrates the paddle moves up – relax, it goes down.
The hardware portion of the build is fairly tricky business. Chuck and Mengxiang built a circuit to amplify the tiny voltages between their ears into something a microcontroller can read. The circuit is loosely based on this Arduino EEG build, but highly refined as the elegance of an ATMega644 requires.
The EEG amplifier has a cutoff of under 50 Hz, perfect for reading the Alpha waves correlated with concentration. The oscillations from the skull-cap are sent through the ATMega to MATLAB where after a pass through an FFT the brain waves are converted to mouse scroll wheel output.
Here's a demo video available where you can see spectators screaming at the poor test subject, telling him to relax and concentrate on command.
It seems Charles Moyes and Mengxiang Jiang won't suffer from the sore wrists and thumbs from an Atari controller any longer. They built a version of Pong played by concentrating and relaxing while wearing an EEG headset.
Right now, there's only enough hardware for one player; when the player operating the red paddle concentrates the paddle moves up – relax, it goes down.
The hardware portion of the build is fairly tricky business. Chuck and Mengxiang built a circuit to amplify the tiny voltages between their ears into something a microcontroller can read. The circuit is loosely based on this Arduino EEG build, but highly refined as the elegance of an ATMega644 requires.
The EEG amplifier has a cutoff of under 50 Hz, perfect for reading the Alpha waves correlated with concentration. The oscillations from the skull-cap are sent through the ATMega to MATLAB where after a pass through an FFT the brain waves are converted to mouse scroll wheel output.
Here's a demo video available where you can see spectators screaming at the poor test subject, telling him to relax and concentrate on command.
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