perception in time

Part of the visual processing is happening in nerve cells before the signals have even reached the brain, so it processes quite fast. As quick as it is, however, there must be some lag..... say 1/120 of a second or so before that light in our eyes becomes an image and we are ever so slightly living in the past.
We are so easily adaptable to learn how think ahead so well that the ahead seems present and we don't even think about it. Watch a toddler try to catch his/her parent. (S)he runs to where the parent is when (s)he starts chasing only to notice that the parent has now moved and then sets sites for the new position. The parent has a hard time letting the little tyke win. Somehow, the kid figures the strategy to aim for where the parent will be by arrival time and learns the answer to Zeno's arrow puzzle where the arrow never arrives because it always goes halfway... you aim for past or through. Then we experience driving vehicles faster than we were designed to propel ourselves. The faster we go the further we think ahead in the road. At one speed, 10 ft ahead is 'now,' while another speed has 40 ft ahead as 'now.'
So this lag in our perceptions is entirely forgotten. Even those 'living for the now' are experiencing the slight past and thinking to the slight future.