Figure 5.

Single and double alpha spectral peaks. (A) Approximate locations of the O1, Fp1, Cz, and T3 electrodes; the locations of primary visual cortex (V1), primary auditory cortex (A), and primary motor cortex (M); and the nodal lines of the 1-1, 10, and 11 modes, which follow the boundaries between the colored regions. (B) Individual modal spectra for η = 00 (blue) and η = 1-1 (green) for the Default parameters in Table 6. The red curve shows the 1-1 spectrum for the Increased Gain case and the dashed curve is the resulting total spectrum P(ω). (C) The corresponding power spectra P(r, ω) at O1 (blue), Fp1 (red), and Cz (green) electrodes for the Increased Gain case. (D) Same as (B) but for the Small Splitting parameters in Table 6. (E) Same as (C) but for the Small Splitting parameters. (F) Same as (B) but for the Large Splitting parameters in Table 6. (G) Same as (C) but for the Large Splitting parameters.