SO.
I think I just added another layer of biometric data to follow for my emotions-tracker project. That is, if it has any bearing - though I might be able to test that, too!
Pulse Oximetry.
There's actually literature on the plausibility of a pulse oximetry ring (They made one!) that can be worn from day to day. SO! I can make one and use that as another datapoint.
A clinical setting is not feasible for my studies, as I want to learn about my own capacity for emotional response (and those of willing participants) day to day, for my AI project as well as a study on emotional intelligence and regulation for my own personal use.