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. 2020 Nov;157:84–93. doi: 10.1016/j.pbiomolbio.2019.12.004

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© 2019 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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Fig. 4 — Correlation of regularity index (RI) and optical wave similarity (OWS) measures in guinea pig whole hearts. A) Example OWS (i) and RI maps (ii, ε = π/6) at PCL = 90 ms. B) Spatial correlation between OWS and RI measures in the guinea pig heart (r² = 0.86). C) Correlation of mean OWS and RI measures in guinea pig whole hearts across PCLs. D) RI measure as a function of distance threshold (ε). n = 6 hearts, 9 PCLs per heart.