Early electrophysiological indices of illusory contour processing within the lateral occipital complex are virtually impervious to manipulations of illusion strength

► VEPs delineate a 2-stage model of object processing. ► In the first, gaps in object contours are automatically closed. ► We tried to modulate a VEP index of this phase by varying contour parameters. ► Peak latency varied inversely with one manipulation, but amplitude was invariant.