On the verge of 2019 our paper on eye tracking and ASMR was published in Plos One.

You can read it here

In this paper we show that individuals who have ASMR experiences show a change in pupil size while watching ASMR movie clips, this change in pupil size was not found in participants who did not report ASMR experiences. This study adds nicely to the growing body of literature on physical changes associated with ASMR