A study of kinesthetic illusion

Subjects experience a mismatch between execution and appreciation (kinesthetic illusion) under certain conditions: lifting up a weight to a suggested height with instructed speed. To get the aspect of this kinesthetic illusion from the movement of the forearm, the measurement of forearm-trajectory was made. From the result, it was recognized that there was a linear correlation between the difference of weight (DW) and the difference of reaction time (DRT). This fact shows that there is a constant error between execution and appreciation of movement.