New entity to denote temporal resolution or frequency

[tsalo]

Would a tres or freq entity be useful for this BEP? I came across an fMRI workflow (rapidtide) where time series are generated with different frequencies, and @effigies pointed out that BEP021 is probably the BEP with the greatest use-case for a corresponding entity.

[guiomar]

We will definitely need to look at the options that other modalities like fMRI are using or proposing, so we could have intermodality agreement. In M/EEG we will work with:

• Time Series (e.g. a channel in time): t
• Frequency (e.g. the frequency content of a time series, condensed: no time): f
• Time-Frequency (e.g. the frequency content in time): tf

So probably tres will be the equivalent of time series and freqof our frequency with no time.

Have they agreed on the data format to use to store this files? I think it is one of our blocking points: see #1