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. 2020 Nov 23;6(11):e05570. doi: 10.1016/j.heliyon.2020.e05570

Figure 4.

Figure 4

UVF: grand-average ERPs recorded at homologous mesial-occipital (O1-O2) and mesial parietal-occipital (PO3-PO4) sites elicited by a spatial cue (LC) validly preceding targets falling in the upper UVF as compared with grand-averaged ERPs elicited by a central cue (CC) presented prior targets falling in the same field. The difference wave (DW) has also been plotted as computed subtracting ERPs to CC from ERP to LC. LVF: same as for UVF, except that here LC and CC preceded targets falling in the LVF. Note that for all conditions, ERP waveforms have been plotted with a blown-up time scale going from -100 ms before cue presentation until 250 ms after its delivery to highlight the earliest morphological differences found in the waveforms across the two visual fields.