Figure 1.

Schematic view of the ABA-triplets presented in the objective task that relied on the detection of a time shifted B signal. In the third ABA- triplet a black arrow indicates the shift of the B signal, whereas the dashed line indicates the former position the un-shifted B signal. Top: Schematic temporal view of the ABA- triplets that were sinusoidally amplitude modulated (SAM) tones. A and B SAM tones had the same carrier frequency (f_c) but different modulation frequencies (f_mod). The f_mod of the B SAM tone was always larger than the f_mod of the A SAM tone (f_{mod A}). Here the f_mod difference between A and B SAM tones (Δf_mod) is schematically shown (see Table 1 for exact values). Bottom: Schematic spectral view of the SAM ABA- triplets.