Impulse Control For impulse control problems, I would also work at Cz, using the Frequency 1C design, training down 2-38 Hz and perhaps one other band that is dominant (e.g. alpha) and training to increase 9-13 Hz or 12-16 Hz, depending on where SMR appears to be.  It’s likely you’ll have to slide the frequency down to find an exact frequency for SMR.