Figure 6
Timecourses of fMRI signals extracted from ROIs in the delayed reach and control tasks in Experiment 2. Left panels are aligned to CUE onset while right panels are aligned to REACH onset. Cyan-shaded areas represent time epochs during which paired t-test comparisons of signal amplitudes between “NEAR” and “FAR” reaches revealed statistically significant differences at p < 0.05 for at least three neighboring time-points. (A) PMd, SPL, SMA and aIPS show significant signal differences during the planning epoch in DRT. All areas except V1 show differences during the reach epoch. Note that some of these areas show differences only before the reach execution-related peak of the BOLD response, suggesting that some of these differences might still refer to planning during the late delay. (B) In the control task, no ROI showed planning-related differences. However, both SMA and M1 exhibited differences during the reach stage (also compare to A and to Fig. 4).
