Abstract
In order to utilize the phenomenon of kinesthetic illusion as a human interface which can present kinesthetic sense, it is necessary to define a minimum specification of the vibrator required to elicit kinesthetic illusion. In this study, the sensitivity threshold of the illusion has been investigated using the staircase method, which is an adaptive psychometric method in psychophysics. The result of the experiment reveals that the kinesthetic illusion can be elicited with an acceleration of about 40 [m/s^2], with vibratory stimuli of 50 to 90 [Hz]. Furthermore, at the highest frequency of 120 [Hz]the illusion cannot be elicited unless the acceleration is increased to 60 [m/s^2].