Fig. 3.

Intermediate results of the proposed method

The RR/delta RR intervals were calculated from subject 04043 of the MIT-BIH AF database. The P-R intervals were derived from the proposed P wave detection method and the value of zero indicates the invalidation of P-R interval. The solid line in the fourth row shows the assessment of AF as published in the MIT-BIH AF database. ♦: the detected peaks represented the AF transitions in the dRDDC; ○: the detected peaks represented the false AF transitions in the dRDDC. The bottom line shows the dRDDC calculated by the density histograms of the 50 delta beRRs and the 50 delta afRRs