Figure 6
Variability in the visually evoked response of distinct occipitoparietal alpha oscillations to rhythmic flicker relative to IAF. (Panel A), Boxplot illustrating the significant variability in the amplitude-distance correlation coefficients across the 35 alpha oscillatory components, with the horizontal red line representing the median, and the top and bottom edges of the blue box representing the 75th and 25th percentiles, respectively. Three subjects showed only one source (plotted as grey circles), the remaining ten subjects showed multiple sources distributed across the three possible amplitude-distance correlation coefficient variations (plotted as black circles). (Panel B), A histogram, illustrating the distribution of randomly acquirable standard deviations in amplitude-distance correlation coefficients estimated from a permutation test across all 35 alpha oscillators, which showed that our observed standard deviation value of 0.527 (marked by a black cross) lies well outside of the range of standard deviation values likely to occur by chance (permuted mean standard deviation = 0.3773, shown in grey bars) retrieved from 1,000 permutations, p = 0.000056.
