In our data, a reduction in active preparation could be reflected in reduced cue-selective delay activity following the first choice stimulus.
"In other cases," he added, "it could delay activity in the economy until new insurance coverage is established".
The observation that 'memory delay' activity was equivalent or less than gap activity in all areas suggests that what is commonly considered to be memory-related responses largely represents advance motor preparation.
We estimated interference-related delay activity by averaging the percent signal change for the delay contrast (i.e., delay activity averaged across all trial types versus baseline) across all voxels in each ROI, separately for the HE and LE conditions.
The ANOVAs reported above failed to show relationships of gF with interference-related probe activity or interference-related delay activity.
For proactive control ROIs, we identified voxels in which delay activity during HE trials was greater than fixation baseline, and also that delay activity was greater for HE trials than LE trials.
To investigate the specificity of these effects, we conducted a parallel analysis to identify any possible regions that showed more delay activity for the LE than HE condition.
In pre-SMA, delay activity was significantly greater, F 1,17) = 6.5, p = .020, for the high gF group than the low gF group collapsing across interference expectancy condition.
The existence of such multistable regime is a plausible assumption supported by the observation of delay activity during delay-response versions of the random dot discrimination task [1], [2].
Timecourses extracted from the delay-related ROIs did not show significant probe-related effects, and timecourses extracted from the probe-related ROIs did not show significant differences between delay activity during HE and LE conditions (Figure 2).
