REMERGE model: schematic of evolution of network activity during a ACZ test trial in the paired associate inference task. Each stage illustrates pattern of network activity over feature layer (upper) and conjunctive layer (lower), during key phases of processing (see main text for details). Feature layer units (upper) denote individual objects (i.e., A, B, C, X, Y, Z). Conjunctive layer units (lower) code pairs of objects presented during the study phase of the experiment, in localist fashion (i.e., AB, BC, XY, YZ). Feature layer and conjunctive layer connected by recurrent excitatory connections. Response layer not shown. Unit activity denoted by color: from gray (low activity) to red (high activity). Details of transfer functions and parameters used in the network, and quantitative simulations of empirical data are described elsewhere (Kumaran and McClelland, in press).