Oddball

Oddball turns one of neuroscience's best-known experiments into a short game you play while wearing a Muse EEG headband. Watch or listen for the rare "oddball" among frequent standard stimuli. Each time an oddball appears, your brain produces a P300: a positive brainwave about a third of a second later that reflects attention and the updating of what you expect. Oddball records your EEG, averages your responses and scores your P300 for you. THREE WAYS TO PLAY • Visual, Standard: a blue or red circle at the centre of the screen. • Visual, Jump: circles appear anywhere on the screen; tap each red circle, right on it. • Auditory: low and high tones through the phone speaker or wired headphones. YOUR RESULTS • P300 amplitude (µV) and latency (ms), scored the same way every session. • Your average waveforms for standards, oddballs and their difference. • Re-mark the peak yourself with a slider if you disagree with the automatic score. • Accuracy when you respond: hits, misses, false taps and reaction time. MADE FOR RESEARCH • Game Speed sets how quickly stimuli come, from one a second to one every three seconds. • Every session saves the raw EEG with event markers, a trial-by-trial log and a results file (CSV and JSON), ready for MATLAB, Python or R. • Export all your results to one CSV, or open the session folders in the Files app. • If the headband disconnects, the game pauses and reconnects on its own. • The scoring method is versioned and written into every results file. PRIVATE Your recordings never leave your device unless you share them. No account, no tracking. REQUIREMENTS A Muse EEG headband: Muse 2, Muse S or Muse S Athena, connected over Bluetooth. Oddball is a research and education tool. It is not a medical device and does not diagnose, treat or monitor any condition. Built by Olave Krigolson, a neuroscientist who studies the P300.