From PhilPapers forum Philosophy of Mind:

2010-09-11
The time-lag argument for the representational theory of perception
Derrick, I see that you seem to have correlated "vision" with the N1 component of the Event Related Potential whereas almost all authors would put visual experience later than this.  Experience occurs at least as late as the P3 component and probably later (>300 ms post stimulus). Of course, reactions occur at around 250 ms, usually prior to conscious experience.

You have also included a bowl of flowers in the "scene" that is an optical image.  Bowls of flowers are not optical images. The only optical image in the whole scene/vision system is that produced on the retina by the lens system of the eye, an image that almost always differs between the two eyes.  Is the "scene" the retinal images or a spray of the light photons that were not absorbed going hither and thither between the object and the head or the empty space that is the principle component of an objective material object? If it is the retinal images there should be two of them in the diagram, if it is the photons the "scene" should be entirely white because a lens system is needed to separate the coloured components.

You also seem to have included a visual experience that is 1 ms long.  If you shut your eyes then open them for the shortest possible duration before shutting them again you will see that visual experience has a minimum duration of about 20-50 ms. Considerations such as the maximum firing rate of neurons, flicker fusion etc. lead to the same conclusion: that any single visual experience cannot occupy less than about 20 ms.  Notice that the frames of a moving cartoon are seamlessly sewn together if they are less than about 110 ms long and in disease states the minimum duration can be greatly extended leading to bizarre effects such as akinetopsia.

The representation of "vision" as a bowl of flowers is also suspect, we know that vision is processed as objects, a bit like the "sprites" in computer graphics  (this is most clear in states that occur in diseases such as simultanagnosia).  The visual bowl of flowers is a low definition object with potentially high definition components - "potentially" because the high definition requires attention (the addition of further objects).

The reason for a time-lag of about 500 ms between events and conscious experience is that it requires about 500 ms for the brain to create and coordinate the visual sprites and other sensory objects that compose that experience.  These internally created objects are not much like the objects that they represent and it is a wonder of the natural world that we can have a shadow on a retina and say "there is a shadow of a man on that white wall!".