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Layout of the measuring setup for simultaneous recording of the vascular system reaction on the venous occlusion by IPPG and APG systems: (1) Digital cameras, (2) Illuminating green LEDs, (3) Film polarizers, (4) Cross-polarized analyzer, (5) Inflating cuff, (6) Measuring cuff of the Dohn plethysmograph; (a), (b), (c), and (d) are indexes of the video cameras.
