Comparison to literature data for 8 Hz (left) and 16 Hz (right) data.

MP2004: Indicated as a black dotted line are the thresholds of 8 Hz and 16 Hz stimuli of various attributes published in the review by Møller and Pedersen [21]. KFH2015: The colored unfilled circles indicate the thresholds of 3C-PB stimuli reported by Kühler, Fedtke, and Hensel [17]. JFVF2021 and FJFV2020: The colored filled stars and the colored crosses represent thresholds of 3C-PB stimuli reported by Joost, Friedrich, Verhey, and Fedtke [18, 19], respectively. JLPM2020: Dark purple filled diamonds represent thresholds of 1C-PB stimuli as a function of stimulus duration reported by Jurado, Larrea, Patel, and Marquardt [20]. Light green, light red, and light blue solid lines are the fitted threshold–duration functions of PB stimuli in the three experimental conditions reproduced from Fig 4. The light purple solid line is a predicted threshold–duration function for a 16Hz_1C condition. The dark purple solid line represents the fit to the data points of JLPM2020. See text for details.