The present invention relates to a plasma display apparatus and driving method of the same. The image correction device further detects the boundary area of the image area having movement; detects an image area with great gradational change by comparing gradation of image signals corresponding to adjoining pixels; and provides the boundary area of the image area having movement with a diffusion process in an area excluding the image area with great gradational change. The ballast cover includes a plurality of ballast cover holes. A biasing member is in the cavity adjacent the receiving member. In an alternative embodiment, the cross correlation function is used to detect spectral peak offsets between a reference spectrum and a spectrum measured from an exposed biosensor.