p274fig06.21 pARTSCAN can also simulate the trade-off in IT cell responses between position invariance and selectivity that was reported by Zoccolan etal 2007. This trade-off limits the amount of position invariance that can be learned by a cortical area like V1 that is constrained by the cortical magnification factor.<BR>||  Trade-off in IT cell response properties.  Inferotemporal cortex cells with greater position invariance respond less selectively to natural objects. invariance-tolerance, selectivity-sparseness.  data (Zoccolan etal 2007) model (Grossberg, Markowitzm, Cao 2011). position tolerance (PT, degrees) vs sparseness (S)