Figure 1
From: Early response competition over the motor cortex underlies proactive control of error correction
Schematic illustration of the task and experimental design. Participants were asked in all trials to respond to the direction of the central arrow using the corresponding index finger. The experimental session consisted of two blocks, one for each correction instruction. Participants performed 1440 trials in each of these blocks, divided in six runs of 240 trials. Each run had a proportion of 25/75% trials for switch and no-switch trials, respectively. In other words, we had 60 switch trials—presented randomly—per run and a total of 360 switch trials for each correction instruction. With the average of around 50% correct responses to switch, each participant performed approximately 180 correct and 180 erroneous switch trials for each correction instruction. (A) Examples of correct responses to compatible and incompatible trials (B) Example of a correct response to a switch trial. (C) Examples of erroneous responses to a switch trial both in the Correction Encouraged and the Correction Forbidden conditions.
