Figure 1.
Illustration of stimuli and procedure during flicker-and-swap (FS) rivalry for a trial when a probe was delivered (panel A).
For simplicity, we have shown neither that the stimuli were flickering on and off at 18 Hz nor that the screen went black 100 ms after the presentation of the probe until the observer had responded. Illustration of the time course of the probe (panel B).
Figure 2.
Mean strengths of suppression for different rivalry conditions from Experiment 1. Error bars show 1 standard error of the mean.
Figure 3.
Response criteria measure for different rivalry condition in Experiment 2 at the common contrast increment of 0.27 (n = 5) for all test conditions.
Error bars show ±1 standard error of the mean. The differences are significant: Criteria are conservative (observers are unlikely to say the probe was presented) for Static rivalry, neutral for FO, and liberal for FS.
Figure 4.
Strength of suppression for different rivalry conditions in Experiment 2.
The panels on the left show the strength of suppression for static (top), FO (middle), and FS (bottom) as a function of contrast (n = 3). The panel on the right shows the strength of suppression for these conditions for a contrast increment of 0.27 (n = 5). Error bars show 1 standard error of the mean. There are neither significant differences among contrasts nor among the three rivalry conditions.
Figure 5.
Temporal analysis of strength of suppression during swap interval of Experiment 2.
Mean strength of suppression for probes as a function of when they reached maximum contrast after a swap during swap rivalry. Probes began about 50 ms earlier than this and persisted for about 50 ms after this. Probes reaching full contrast 283 ms or more after a swap were increasingly displayed during the early times after the next swap. The contrast increment was 0.27 (n = 5). The curve shows the significant quadratic function that explains some of the variability of the FS data.
Figure 6.
Strength of suppression for different rivalry conditions in Experiment 3 as a function of when they reached maximum contrast after a swap during swap rivalry (there was no swap for FO rivalry).
Error bars show ±1 standard error of the mean. There is a significant strengthening of suppression with time in the swap interval.