1. ECG rhythm detection and diagnosis
   • Test sequence: randomly created, consistently used across subjects
   • 8 rhythm primitives
   • Each condition: 5 repetitions of 2-4 seconds each of each rhythm
   • Between each abnormal rhythm a stretch of NSR
   • Entire duration per condition between 3-4 minutes
   • Subject verbalized diagnosis; investigator keyboard capture

2. Encoded time-stamps generated by system stimulus and subject response