Modulating the Focus of Attention for Spoken Words at Encoding Affects Frontoparietal Activation for Incidental Verbal Memory

Figure 3

Neuroanatomical model of attentive listening networks in the right hemisphere. Both frontoparietal pathways belong to the proposed ventral, “bottom-up”, attention stream (see text). The top stream that processes High-Attention words (red pathway) connects BA40 in inferior parietal lobule (IPL) and BA47 in inferior frontal gyrus (IFG). The delayed-activation stream for novel stimuli (green pathway) shows the relationship between BA39 in IPL and BA47 in IFG. The red stream for processing High-attention words has another frontal component in right middle frontal gyrus (MFG) that appears to play a role in later postretrieval processing (see text). Responses to the Low-attention words were not observed in parietal cortex, but were present in BA9 and BA47, as well as in bilateral anterior insula (BA13) and dorsal anterior cingulate/supplementary motor area (BA6) (Table 1).