130
H. Schmid-Schönbein
Fig. 7.7 Typical recordings of the glabellar PPG, the mucosal LDA and PPG signal from the healthy
gingive of volunteers. Note that marked coherency of the signals in all three records
Fig. 7.8 Typical recordings of the glabellar rPPG and the mucosal LDA in cases of severe
gingivities. Note the appearance of respiration-related activity in the inflammed gingiva
waves” (by Scheffler and Rieger). These early observations have since been studied
more extensively by the combination of skin rPPG, skin LDA and glabellar rPPG
which was developed for this purpose). In about 40% of POAD patients (with stage
II FONTAINE, claudication), the characteristic respiration-related perfusion activity
was detected, the power of which is inversely related to the so-called Doppler pressure, i.e. peak systolic poststenotic arterial pressure in the claudicants. Physiologically speaking it is important to note that not only the well-established primary
H. Schmid-Schönbein
Fig. 7.7 Typical recordings of the glabellar PPG, the mucosal LDA and PPG signal from the healthy
gingive of volunteers. Note that marked coherency of the signals in all three records
Fig. 7.8 Typical recordings of the glabellar rPPG and the mucosal LDA in cases of severe
gingivities. Note the appearance of respiration-related activity in the inflammed gingiva
waves” (by Scheffler and Rieger). These early observations have since been studied
more extensively by the combination of skin rPPG, skin LDA and glabellar rPPG
which was developed for this purpose). In about 40% of POAD patients (with stage
II FONTAINE, claudication), the characteristic respiration-related perfusion activity
was detected, the power of which is inversely related to the so-called Doppler pressure, i.e. peak systolic poststenotic arterial pressure in the claudicants. Physiologically speaking it is important to note that not only the well-established primary