Home▸Neuroscience & Biophysics▸Brain-Computer Interface: EEG Motor-Imagery Decoder

Brain-Computer Interface: EEG Motor-Imagery Decoder

Interactive BCI simulator: 10-20 EEG electrodes on a 3D head generate synthetic alpha/beta/gamma signals, a live waveform chart shows the raw trace, and a motor-imagery decoder reads left-vs-right beta-band power asymmetry to steer a cursor.

Neuroscience & Biophysics3DAdvanced60 FPS

This simulator visualises how a motor-imagery brain-computer interface turns raw EEG into a control command. Nineteen electrodes arranged on a 3D head emit synthetic alpha/beta/gamma-band signals with noise, a live chart plots the raw trace of any selected electrode, and a simple decoder compares beta-band power between the left (C3) and right (C4) motor-cortex electrodes to classify an imagined left, right or resting intent — steering a cursor across a track in real time.

⚙ Under the hood

3D 10-20 EEG electrode array on a stylised head generates synthetic alpha/beta/gamma signals with noise; a motor-imagery decoder compares C3/C4 beta-band power asymmetry to classify left/right/rest intent and steers a cursor in real time.

neuroscienceBCIEEGmotor imagerybrain-computer interfaceThree.jssignal processing

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install