“…In this manuscript we present a novel computational framework that enables a rigorous evaluation of a mapping systems ability to localize the arrhythmogenic sources and their type (i.e., focal or reentrant), which spans categories 1) and 2), via a blinded comparison with numerical simulations. As far as we are aware, the only other similar study focused on a computational framework for MS evaluation was by Bartolucci et al, 2021 in which the results from two virtual catheters were compared using simulations of a two-dimensional spiral wave ( Bartolucci et al, 2021 ). Here, activation times and patterns for virtual signals were computed for simulations incorporating three hypothetical MSs (BGC, BPC, and UA) and compared to the corresponding high resolution data from two simulations containing paced (P), reentrant (R), and focal (F) patterns.…”