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. 2020 May 7;15(5):e0232523. doi: 10.1371/journal.pone.0232523

Fig 2. Harmonic regression model fit in a single case.

Fig 2

The periodic nature of the data and harmonic regression model fit from the green channel from three cardiac cycles is demonstrated in the retinal vein from a single case. The changes in the harmonic regression waveform with changes in ODF are detailed in Figs 9 to 11.