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. Author manuscript; available in PMC: 2013 Jul 12.
Published in final edited form as: Proc IEEE Int Symp Biomed Imaging. 2012 Jul 12;2012:844–847. doi: 10.1109/ISBI.2012.6235680

Fig. 1.

Fig. 1

Heart Signal Manifolds: three orthogonal views of points in the first three relevant coordinates of Laplacian eigenmaps from a collection of canine ventricular surface (epicardial) recordings during QRS. The mapping of each time instant in each beat is represented as a single red sphere.