Figure 4From: Exploiting periodicity to extract the atrial activity in atrial arrhythmiasTop ross-correlation values ( ρ ) obtained by the algorithms piCA (circles) and pSAD (crosses) in the case of synthetic registers for AFL (numbered 1-4 left side) and AF (numbered 1-6 right side); bottom estimated peak frequency ( f ^ p ) by respective algorithm and true peak frequency f p .Back to article page