p459fig12.56 (Grossberg, Pearson 2008) proposed that the ability of working memories to store repeated items in a sequence represents rank information about the position of an item in a list using numerical hypercolumns in the prefrontal cortex (circels with numbered sectors: 1,2,3,4).  These numerical hypercolumns are conjointly activated by inputs from item categories and from the analog spatial representation of numerosity in the parietal cortex.  Thes parietal representations (overlapping Gausian activity profiles that obey a Weber Law) had earlier been modeled by (Grossberg, Repin 2003).  See the text for details.<BR>||  Item-order-rank working memory, rank information from parietal numerosity cicuit (Grossberg, Peaarson 2008; Grossberg, Repin 2003).  [Sensory working memory-> adaptive filter-> list chunk-> attentive prime-> Motor working memory]-> [large, small] numbers-> transfer functions with variable thresholds and slopes-> uniform input-> integrator amplitude-> number of transient sensory signals.