A constant velocity joint assembly comprises outer and inner joint members having engaging contact surfaces which support the joint for articulation about a common center point. The outer member includes a fingergrip region having an indentation region that extends inwardly from the outer surface of the outer member. In this gradation region, the electrode finger pitches are sequentially varied in the range from the electrode finger at the farthest end that is one end of the gradation region to the electrode finger lying at the other end of the gradation region. With this, it is, among other things, possible to disconnect the feedback compensation given no present feedback such that artifacts can be prevented.