For adults, SS-VEPs were recorded at each of the 12 different TFs: 1, 2, 3, 4, 6, 8, 9.6, 10.7, 12, 13.7, 16, and 19.2 r/s. For infants, SS-VEPs were recorded at each of the 7 different TFs: 2, 3, 4, 6, 8, 12, and 16 r/s. Fewer TFs were used due to infants' attention span limiting available recording time.