Figure 1.
An initial fixation cross was presented for random durations between 1000 to 2000 ms, followed by a target for 260 ms in the supraliminal condition and 16 ms in the subliminal condition, followed by a mask for respectively 40 or 284 ms. The questions appeared after a 1000 ms delay. The participants answered by pressing a key, which then prompted the second question and subsequently initiated the next trial.
Figure 2.
EEG 128 electrode placement (Biosemi).
The black square delineates the electrodes of interest.
Table 1.
Result for N1 component.
Figure 3.
Average ERP for dressed and naked bodies in the supraliminal and subliminal conditions.
Average ERP (in µV) for opposite-sex stimuli (A, B) and same-sex stimuli (D, E) for supraliminal and subliminal conditions. Naked bodies are indicated in red and dressed bodies in black. Arrow indicates the N1 component. Mean N1 values for opposite-sex stimuli in the different conditions are illustrated in the histogram below (C). N1 values for same sex stimuli are shown in (D). **p<.01, error bars indicate the standard error.
Figure 4.
Inverse solution for the N1 component.
Inverse solution on the basis of the N1 component estimated using the smooth prior inverse solution implemented in the statistical parametric mapping (SPM8) for the N1 component (146 ms–154 ms). Results show paired t-test for naked compared to dressed opposite/same-sex stimuli in the supraliminal and subliminal condition displayed on a glass brain (xjviewer). Statistical threshold p<0.5, cluster voxel size >15.
Table 2.
N1 component inverse solution results.