Figure 3.

A, Three types of FB conditions. Concurrent visual feedback, provided by a yellow cursor indicative of subjects' current position, was only provided in the cFB condition. In the after-trial feedback condition, a motionless representation of the produced red line was provided after trial completion, whereas no concurrent feedback was provided during the execution phase. In the no feedback condition, no concurrent or after-trial feedback was provided. Every trial started with a planning phase of 2 s in which a yellow cue, which indicated whether cFB would be given in the upcoming trial, was presented. During the execution phase, the white target dot moved with constant speed along the blue target line for 9 s. In each condition, the intertrial interval (ITI), i.e., the time between each trial where no movement performance was required, lasted 3 s. During ITI, atFB was provided for 1 s in the atFB condition and a black screen was presented in the cFB and NFB conditions. B, No-move reference trials. No-move reference trials were preceded by a pink cue, and they were included to provide a baseline measure for the fMRI analyses.