Waveforms simulated by means of analytical solutions. (\(\bf A\)) Time dependence of the weighted sum of the excitatory state variables. The thalamic input signal was targeting the same central column of each of the three core fields (column 40, 56, and 72, respectively, see Figure \ref{fig:AC_w_ee}B). (\(\bf B\)) Time dependence of the MEG response computed as the sum of input currents multiplied by the \(\bf{K}\) matrix (Equation \ref{eq:MEG}), for all 16 core columns. The thick blue line corresponds to the case shown in (A). The thin lines represent waveforms where the input was delivered separately to the other 15 columns of the three core fields, i.e. to the first column, the second, etc. at a time. Note that P50 is only generated once the topography of the AC covered by the \(\bf{K}\) matrix is taken into account. The inset shows a U-shaped dependence of the M100-peak latency on the input frequency.—In both figures, the origin of the abscissa (\(t=0\)) indicates stimulus onset.