Figure 3.
A, Diagram of the experimental arrangement, indicating angle (45°) and positions of the MEMS sensor during the recordings. B, In each box, the upper trace shows the electrocardiogram (ECG) recording; and the lower trace, the magnetic flux density for the respiratory activity (i.e., the respiratory magnetogram BMEMS). The numbers in millimeters (mm) indicate the different positions in which the sensor was placed.