Abstract
The objectives of this study are the development of device to measure the pressure in the ear canal, and the understanding of the relation between pressure in an ear canal and venous hemodynamics by using our device. We carried out the measurement of pressure in ear canal with the changing of position by using a tilt bed to verify the device we developed. The results showed that the good agreement of the change of pressure in an ear canal with the change of position. The change of pressure in ear canal showed the same reaction of venous hemodynamics during the change of position. Thus, the developed device to measure the pressure in ear canal performed the measurement of venous hemodynamics.
