"Sensor probe" for vagus TENS?
I'm trying to replicate a tVNS setup used in this study by Kevin Tracey. They used a TENS 7000 device with what they call a "a sensor probe (Blue Moon Health)" to target the vagus through the cymba concha. I'm trying to figure out exactly what this "sensor probe" is - there's a picture in the paper here, and they show how to use it at the beginning of this video.
Does anyone know what this "sensor probe" is and where to get one? "Blue Moon Health" doesn't exist anymore afaict. I'm actually not even sure if this "probe" was meant for TENS specifically (the search results for "TENS probe" bring up probes for ... well, a different kind of stimulation), it might be repurposed from some other sort of machine?
EDIT: finally figured out how to include an image :)
