What is Expanded Field?

I was asked at the end of 2006, when I mentioned artists like James Sienna, (Sagging Grid, 2006Reduction linocut Image Size: 28 1/16 x 21 11/16 inches)

Richmond Burton, (Eyes in the Heat, 1992oil on linen84 x 108 inches)

Ross Bleckner, (Selection, 1999. Spitbite aquatint etching with softground & chine colleSomerset soft white paperImage size 30" x 22" -- Paper size 40" x 31")

and the Abstract Expressionists, along with my own work, why I didn't mention 'Expanded or Visual Field'? At that point and this often happens in my practice, my brain didn't keep up with my hands. In other words, I made work that I didn't yet understanding or capable of discussing until sometime later. I hadn't yet given myself time to contemplate the work and its relationship to the bigger picture. So at that stage my answer was that I didn't really understand the concept of 'Visual Field'. My understanding of 'Expanded Field' has now broadened, which exists in this way: 'Expanded Field' to me is covering a particular space or given surface with a repetitive pattern. I also see it (within where I see my work heading) like an installation, where the viewer is totally immersed (vt to plunge into a liquid, to absorb or engross; to baptise by total submergence-) where the eye could imagine the image or pattern continuing on "forever".