Step # 5 – Re-Montaging and Use of Average Reference and Laplacian Norms

5a- Double click on the Average Reference Montage or use the Tab & Arrow keys.   The corresponding Z scores will be displayed in the lower right Z Score window.

 

 

5b - Double click on the Laplacian Reference Montage or use the Tab & Arrow keys.   The corresponding Z scores will be displayed in the lower right Z Score window.

 

 

 

5c - Increase the scale to 600 ua,  i.e., micro amperes, because the Laplacian is an estimate of the current flowing at right angles through the skull (Nunez, 1981; 1994; Pasqual-Marqui et al, 1988).