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. Author manuscript; available in PMC: 2012 May 1.
Published in final edited form as: Biomed Microdevices. 2012 Apr;14(2):357–366. doi: 10.1007/s10544-011-9612-9

Fig. 7.

Fig. 7

(a) Comparison between human and zebrafish ECG signals. Due to a smaller heart size and higher mean heart rates, the PR interval for zebrafish is shorter than that of humans. T waves usually display a biphasic pattern acquired from the pseudo-unipolar electrodes. (b) Lead placements in relation to the vector direction. QRS amplitudes in P1 and P2 are dependent on the electrode lead position. Ep denotes electric potential, Ω the solid angle, and Φ the strength of charge surface (Φ = voltage/unit of the solid angle)