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Specific Contributions of Ventromedial, Anterior Cingulate, and Lateral Prefrontal Cortex for Attentional Selection and Stimulus Valuation

Figure 5

The effect of spatial attention on contra- and ipsilateral targets on the firing rate.

(A) Fronto-cingulate distribution of the proportion of neurons that had a significantly (p≤0.05) higher firing rate for the contralateral than for the ipsilateral attention condition. The small map on the bottom right shows two separable clusters with a statistically significant spatial concentration of neurons whose firing rates were elevated for the contralateral attention condition. (C) Normalized firing rate as a function of time, separate for the contralateral attention condition (red line) and the ipsilateral attention condition (blue line) for the subset of 30 neurons that were recorded within the smaller spatial cluster within area 32, as indicated by the dashed arrow originating from the small map in (A). Color shading indicates SEM. (B) Same format as (B), but now for 116 neurons that were recorded within the larger contour spanning the complete lateral-to-medial extent of the fronto-cingulate cortex. (D) Same format as (A), but now showing the spatial distribution of the proportion of neurons that had a significantly higher firing rate for the ipsilateral than for the contralateral attention condition. (E) Same format as (B,C), but now for the neurons that were recorded within the contour that spans parts of areas 6, 9, and 24, as indicated by the dashed arrow originating from the small map in (D).

Figure 5

doi: https://doi.org/10.1371/journal.pbio.1001224.g005