Figure 6

Cluster plots of contralateral vs. bilateral response of 2 subjects. For each cluster plot, values of individual pixels are plotted as a function of the absorbance measured at that pixel to the contralateral stimulus (horizontal axis) vs. the response measured at the same locus (or pixel) evoked by the bilateral stimulus (vertical axis). Reference line, plotted at a slope of 1, indicates where pixels with equal values for both conditions lie. Note that in the anterior region, the majority of the pixels are below the reference line (response to bilateral stimulus was weaker than the response to the contralateral stimulus) and that in the posterior region, the majority of the pixels are plotted above the reference line (response to bilateral stimulus is greater than the response to the contralateral stimulus). Plots are normalized (minimum absorbance value scaled to 0; maximum scaled to 1).