Proposal: global optional observation intervals for Units table

[bendichter]

Right now observation intervals are specified by unit, which has the benefit that can specify if individual units come in and out of observation during a session, but by far the more common use-case is that there is a global observation interval that applies to all units. I propose we add a field to the Units table that allows us to specify these global observation intervals. This can be present with the individually defined observation intervals, we would just need to specify how to interpret when they are both used.

[oruebel]

Could you clarify how this is different from https://nwb-schema.readthedocs.io/en/latest/format.html#groups-intervals

[bendichter]

I suppose you could use a TimeIntervals object to specify the intervals over which units were observed, but these intervals would apply specifically to spike times. Would there be a way to formalize that association?