Are active electrodes worth it?

[Guest guest]

I was looking at the active electrodes for eeg use and have some

questions. One of my biggest frustrations is making sure I have good

impendence. There have been times when I feel I spent more time doing

that then doing eeg work. I was trained to use the eeg paste, then I

discovered using saline with fextrodes and neurobands. However, if

active electrodes really do take the hassle out of impendence issues

they might be worth it to me.

What do you use to attach them to the skin? Is skin prep necessary?