大きさ

[hiroko]

Gamma should dominate the brain waves during awakening, but why are the Delta waves displayed so high?

[James]

Delta is high when you have low quality data with EMG interference, or just a bad sensor connection. Make sure your RAW EEG shows minimal variance, which will indicate good sensor contact.

[hiroko]

Thanks for your replay, How can I find out whether RAW EEG shows minimal variance?

[James]

Check the RAW EEG view, which is this one: https://mind-monitor.com/img/mm-screen-3.jpg
In my example here, you can see that the signal on TP9 is a little "fuzzy" and could be improved for example.

[hiroko]

Looking at the raw data, there was a part where the wave was abnormally high for a moment.
Please let me know if you have any ideas for creating a graph considering (omitting) outliers.

[James]

I can't tell by looking at just these pictures sorry. When recording, check the RAW EEG has minimal variance, this will let you know you have good sensor contact. That's it

[hiroko]

Thank you very much. I am analyzing the graph with reference to your advice.
What is the base of the logarithm (log) of an Absolute graph?

[James]

I'm not sure. The values are calculated by Interaxon's algorithms.