Figure 5 | Scientific Reports

Figure 5

From: Evaluation of transcutaneous near-infrared spectroscopy for early detection of cardiac arrest in an animal model

Figure 5

Representative short-time Fourier transform analyses. STFT colormaps of (a) carotid ABP and (c) NIRS O2Hb signals over a 15-min window. Pentobarbital infusion commenced at 600 s. (b,d) Three analysis windows were selected for subsequent analysis, denoting different stages of euthanasia. O2Hb oxygenated hemoglobin, ABP arterial blood pressure, BSL baseline, EUT euthanasia, STFT short time Fourier transform (for STFT colourmaps from individual animals, see Supplementary Figs. 1–8).

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