.  In the Introduction, you now provide a very clear hypothesis:  "Our main hypothesis is that change detection in complex,  statistically defined, textural stimuli requires the accumulation of  sensory evidence, and that the degree to which the neural system  performs the accumulation covaries with the level of task involvement."  Please, in the Discussion, summarize in clear and simple terms the  status of your hypothesis - I believe that you provide convincing  evidence in its favour, but this is not really clearly specified and it  should be. This might go together with the nice ending 