Table 1.
Characteristics of the subjects under study.
Figure 1.
The experimental setup for recording of the blood perfusion in the facial area.
Figure 2.
Examples of the images obtained with the BPI system and with the thermographic camera: (A) 2D distribution of the blood pulsation amplitude; (B) 2D map of the blood pulsation phase; (C) 2D distribution of the skin temperature.
Figure 3.
Spatial distribution of facial blood pulsations.
Row A, a 2D map of the blood pulsation amplitude; row B, a 2D map of the blood pulsation phase; row C, evolution of the blood pulsation volume during a single cardiac cycle in the right (black line) and left (red line) cheeks of each subject. Column HS: a healthy subject; column FH: a subject from the group with a family history of migraine; column MP: a subject suffering from migraine (left sided).
Figure 4.
Distribution of the side-to-side difference in blood pulsation parameters among groups of migraine patients (MP) and healthy subjects with (FH) and without (HS) family history of migraine.
Bars: mean values with SDs, circles: individual values. A, the amplitude difference, B, the phase difference.
Figure 5.
Number of the migraine patients possessing either right or left transverse wave of blood perfusion in relation to the side of the headache.
Figure 6.
Distribution of the cheek-nose BPI amplitude difference among groups of migraine patients (MP) and healthy subjects with (FH) and without (HS) family history of migraine as measured by A: the BPI system and B, far-infrared thermography (skin temperature).
Figure 7.
Dependence of the BPI asymmetry parameters on the subject’s age for migraineurs: A, the amplitude asymmetry; B, the temporal asymmetry.
Figure 8.
The temporal asymmetry in the MP group as a function of A, systolic blood pressure, and B, the frequency of the migraine attacks.