Post hoc measurement of EEG quality
Posted: Thu Jan 07, 2021 5:58 pm
Good morning,
I was wondering if there is some sort of way to say anything about the quality of EEG data after a recording is done.
I can come up with simple ways like:
1) amount of channels that have too much high frequency noise
2) channels that have too much drift
3) channels that have are flat
But is there also a way to say anything about data that doesn't have such obvious problems. For example, is there a way to see (both during collection and afterwards) if channels are bridged? Is there a way to see if the electrode was maybe to far from the scalp (by adding a lot of gel we tend to overcome issues like this, but I am slightly worried that this might cause other issues)? Is the offset of channels stored anywhere, I assume this could maybe show some insightful info? Is there something I am missing that might be insightful for this?
Thanks for your time,
Douwe
I was wondering if there is some sort of way to say anything about the quality of EEG data after a recording is done.
I can come up with simple ways like:
1) amount of channels that have too much high frequency noise
2) channels that have too much drift
3) channels that have are flat
But is there also a way to say anything about data that doesn't have such obvious problems. For example, is there a way to see (both during collection and afterwards) if channels are bridged? Is there a way to see if the electrode was maybe to far from the scalp (by adding a lot of gel we tend to overcome issues like this, but I am slightly worried that this might cause other issues)? Is the offset of channels stored anywhere, I assume this could maybe show some insightful info? Is there something I am missing that might be insightful for this?
Thanks for your time,
Douwe