Supplementary Figure 4: Representational similarity across all 40 conditions at cue 1 presentation.
From: Triple dissociation of attention and decision computations across prefrontal cortex
Data are as presented in main a-c, but are now subdivided into trials where cue 1 was presented in the top versus bottom half of the screen. The key results from this analysis primarily replicate the findings when top and bottom cues are collapsed. Note, however, that in DLPFC, representational similarity is modulated by top/bottom stimulus location (compare, for example, the average brightness for top left→top left versus top left → bottom left). This indicates that DLPFC activity primarily represents spatial position rather than simply left/right action. This finding was also recapitulated in single unit analyses of DLPFC neurons (see Supplementary Note). Correlation is computed with Pearson’s correlation, as in main Fig. 4. n = 189 units (ACC), 135 units (DLPFC), 183 units (OFC).
