Fig. 4.

Consistency of data features across four separate scanning days. Coloured spheres represent beta (15–30 Hz) rebound peaks from Experiment 2. The peak locations reflect the maximum chi square statistic when comparing pre-button press data (−1500–−1000 ms) to post-button press data (500–1000 ms) across a 20 mm radius, 1 × 1 × 1 mm³ resolution sphere centred around the average left primary motor cortex peak (−34, −30, 52). Note that the solutions were not constrained by the mesh as reconstruction was volumetric. Data shown are smoothed using an 8 mm kernel.