Fig 1.
Stimuli and stimulus sequences in the texture and object conditions.
A: An example of the stimulus field. The vanishing stimuli were either the 45o or the 135o bars. Both orientations were standard and deviant. The green and red dots are the stimuli of the tracking task. B: the outline of the stimulus sequences (in both the onset and offset stimuli a +/- 40 ms range was presented around the 520 ms mean value). ON: the appearance of the whole stimulus set; OFF: a subset of the stimulus set vanished; S: frequent (standard) vanished subset; D: rare (deviant) vanished subset.
Fig 2.
Event-related potentials and difference potentials at the posterior (occipital) ROI to stimulus offset and onset events in the object and texture conditions.
The scalp distributions are calculated for the ranges with significant deviant minus standard differences.
Fig 3.
Event-related potentials and difference potentials at the anterior (frontal) ROI to stimulus offset and onset events in the object and texture conditions.
Table 1.
Amplitude values (μV) of the posterior negative difference potential (vMMN), the positive and anterior positivities and the N1 components (standard error of mean in parenthesis).