Figure 2
Scatter plot of Topographical Sparseness and Residual Variance values of all ICs in the study. Each dot represents an IC. X-axis = residual variance of an equivalent dipole of the IC. Vertical dotted line shows the residual-variance threshold = 0.15 (15%). Y-axis = topographical sparseness (TS) of an IC. Horizontal dotted line shows the TS threshold = 5. The number of all ICs from all recorded sessions in the study amounts to 4169 ICs, which consist of the following three groups: 672 ICs from 32-channel datasets (red dots), 1344 ICs from 64-channel datasets (blue dots), and 2153 ICs from 127-channel datasets (black dots). ICs in the lower left rectangle in the scatter plot were selected for further data analysis.
