Figure 4.

The increase and reduction in dimensionality at the mapping site of the object in visual area 17 after introduction of a stationary object at time 0. COR correlation in r(t) between pairs of neurons (Smith and Kohn, 2008). V_m population membrane voltage. VAR (yellow) variance of the population membrane potential (calculated from Roland et al., 2006); VAR (green) trial-by-trial variance in the firing rate (Gawne et al., 1996); r(t) firing rate; dV/dt time derivative of membrane potential V (proportional to net membrane current); (Eriksson et al., 2008). As the variance decrease and the correlations increase in the feedback interval the dimensionality reduces. All data normalized to maximum values.