Basic idea ATC MC Heartbeat ● Observation:Although heart rate has Cycle intrinsic variability,the interval between AO and RF is stable. AC ● Solution:Segment the heartbeat Heartbeat cycle 0.05 -Volunteer A based on the stable interval between 30.04 Volunteer B AO and RF. 0o9 Volunteer C Volunteer D Volunteer E i0.01 0 0 0 50 Deviation(ms) Deviation of AO and RF from mean valueBasic idea ⚫ Observation: Although heart rate has intrinsic variability, the interval between AO and RF is stable. ⚫ Solution: Segment the heartbeat based on the stable interval between AO and RF. Deviation of AO and RF from mean value Heartbeat cycle