High-Frequency Vibration Treatment of Human Bone Marrow Stromal Cells Increases Differentiation toward Bone Tissue

Figure 1

Detection of acceleration signals plotted with Matlab 7.1. The signals are shown on the z-axis (a), y-axis (b) and in the frequency domain after a Fourier Transform for z-axis (c) and y-axis (d). The measure unit of the acceleration is m/s². No significant acceleration is recorded on the x-axis, that is, along the rotational axes of the motor (see Figure 2).

(a)

(b)

(c)

(d)