A Brainwave-Controlled Version of "Pong"

Few video games are more basic than Pong, but Charles Moyes and Mengxiang Jiang’s version is incredibly complex. The two Cornell University students built a custom electroencephalography (EEG) device so they could control the game’s onscreen paddle with their minds.

The alpha waves that EEG machines read are faint electrical signals; Moyes and Jiang ran the EEG readings through an amplification circuit to filter and boost the signals. The amplified readings are then digitized and sent over USB to a computer running the game.

Spiking alpha waves produced during relaxation move a player’s paddle up, and smaller waves, indicating concentration, move it down. The size of the waves determines how much the paddle moves.

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