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Is there a way to access the data of the time frequency plot?
Posted: Wed Jul 22, 2020 11:11 am
by Peter Gamma
For a peak detection of the time-frequency plot these data are necessary. Is there a way to access these data?
Re: Is there a way to access the data of the time frequency plot?
Posted: Wed Jul 22, 2020 11:51 am
by James
You can calculate this from the RAW EEG data using a FFT.
There are many many different ways to perform a FFT calculation, so this is not included in the CSV data.
For a super basic FFT algorithm, check out this site:
https://rosettacode.org/wiki/Fast_Fourier_transform
Re: Is there a way to access the data of the time frequency plot?
Posted: Wed Jul 22, 2020 12:01 pm
by Peter Gamma
Thank, James, that s what I thought. Only wanted to be sure before I start doing it myself.
Re: Is there a way to access the data of the time frequency plot?
Posted: Wed Jul 22, 2020 12:22 pm
by James
No problem. FYI, remember to set the data recording rate to constant (220/256Hz) in settings if you're doing your own FFT's.
Re: Is there a way to access the data of the time frequency plot?
Posted: Wed Jul 22, 2020 1:33 pm
by Peter Gamma
Thanks, James.