Fig. 7.
Confusion matrix (A) quantifying comparisons between the perceived ridge spacing relation with the ground truth. The average accuracy and standard error across the subjects (B) are reported with the asterisk indicating significance of p<0.001, comparing to chance. ‘# of Ridges’ denotes the stimulation patterns had equal number of ridges/spikes, while ‘Time’ denotes the stimulation patterns lasted the same amount of time.