PRODEX-9 project: Three-dimensional Ballistocardiography in microgravity (Vecto-Ballistocardiography) (B3D) in support of the ILSRA-2009-0729 project

Abstract--Balistocardiography was recorded in 3-D on a free floating astronaut in space as well as on healthy volunteers participating to a dry immersion study in a terrestrial laboratory. We demonstrate a new technique suitable for the analysis of 3-D BCG. The spatial curve of the displacement vector is analyzed instead of the three components of acceleration. The technique presented is invariant from the axis
of representation and provides important novel physiological information.