Working memory (WM) is assumed to be divided into Verbal (left hemisphere) and Visual (rigth hemisphere) WM (Cabeza et al, 2000). Verbal WM is in charge of holding information about the decoded phrases in order to integrate it with visual information (e.g. Rocha et al, 2004). Here, we assume that FM1 is associated with such integration.
The verbal to visual translation required to solve the task inolves the sintatical analysis of the phrase and figures (Kuperberg et al, 2005, 2006; Naghavi et al, 2005, Xu et al, 2005). We assumed that FM2 is associated with these activities.
Despite the left hemisphere dominance for language processing, the right hemisphere is also engaged during discourse analysis (e.g., Nakamura et al, 2000; St George et al, 1999; Wallentin et al, 2006). It seems that both the right and temporal and parietal lobes are involved in semantically integrating verbal and visual information. Here we assume that FM3 is associated with the posterior left/right information integration.
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