Fig. 1From: Effect of vibration characteristics and vibror arrangement on the tactile perception of the upper arm in healthy subjects and upper limb amputeesMechanical properties of vibrations for each combination of time and intensities. a represents the force generated (X-direction) by the vibration for each combination of time and intensity; b represents the spectre frequency of the stimulation expressed in Hertz on the x-axis and square Newton on the y-axis, Mean Frequency (MF) is labelled for each stimulationBack to article page