Decoding PCC values across 50 test trials by the ResNet model for HB ( N = 5) participants when all electrodes are used versus when only LD-in-HB electrodes ( N = 5) are considered. There are no statistically significant differences for four out of five participants (Wilcoxon two-sided signed-rank test, P = 0.114, 0.003, 0.0773, 0.472 and 0.605, respectively). All box plots depict the median (horizontal line inside box), 25th and 75th percentiles (box) and 25th or 75th percentiles ± 1.5 × interquartile range (whiskers). Yellow error bars denote mean ± s.e.m. Distributions were compared with each other as indicated, using the Wilcoxon two-sided signed-rank test and independent t -test. ** P < 0.01; NS, not significant.