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srcw2 = pw_mne*data2;  \end{verbatim}  Finally, we constructed a beamformer operator for the data:  \begin{verbatim}  N = 306;  M = 5124;  p_bf = (pinv(Cd,1e-28)*L)';  denominator = diag(p_bf*L);  p_bf = p_bf./repmat(denominator,1, N);  srcb1 = p_bf*data1;   srcb2 = p_bf*data2;  \end{verbatim}  We wanted to visualize the source estimates as a function of time. We achieved this with the following script:  \begin{verbatim}