Substantia nigra activity level predicts trial-to-trial adjustments in cognitive control.. Journal of Cognitive Neuroscience, 23(2), 362-373.
One posits that the CSE indexes trial-by-trial adjustments of cognitive control, which are triggered by expectation, response conflict, negative affect, or response suppression.
Boehler, CN; Bunzeck, N; Krebs, RM; Noesselt, T; Schoenfeld, MA; Heinze, H-J; Münte, TF; Woldorff, MG; Hopf, J-M, Substantia nigra activity level predicts trial-to-trial adjustments in cognitive control., Journal of Cognitive Neuroscience, vol. 23 no. 2 (February, 2011), pp. 362-373, [abs] [abs].
Specifically, this type of paradigm makes a demand on the observers to make fast trial-by-trial adjustments of top-down biasing weights in order to succeed in the search task.
Larger trial-to-trial adjustments were associated with less pronounced P3b amplitudes.
Again, larger trial-to-trial adjustments were associated with more pronounced FRN amplitudes.
We examined participants' trial-by-trial adjustments in choice preferences during the initial learning task.
More correct adjustments occurred in Experiment 2. No other significant effects emerged for the factor experiment (all p-values > 0.389) for trial-to-trial adjustments and number of correct adjustments.
This process was driven by the trial-by-trial adjustments of the distance travelled by the hand after the maximum speed had been attained, prior to reaching the intended target.
A significant correlation emerged between the trial-to-trial changes in response time after negative feedback and FRN amplitude values after negative feedback (r = −0.589, p = 0.016, n = 16), indicating that larger trial-to-trial adjustments were associated with more negative-going FRN amplitudes (Fig. 3).
