Smithsonian: "How Researchers Are Beginning to Gently Probe the Science Behind ASMR" — "The burgeoning Internet phenomenon was so new, it didn’t even have a name. It was so strange and hard to describe that many people felt creepy trying. It resided at the outer edge of respectability: a growing collection of YouTube videos featuring people doing quiet, methodical activities like whispering, turning magazine pages and tapping their fingers. Some viewers reported that these videos could elicit the most pleasurable sensations: a tingling feeling at the scalp and spine, coupled with euphoria and an almost trance-like relaxation.
Beauty products, in fact, play a starring role in the trend. Makeup tutorials have long been popular on YouTube, but after viewers realized how relaxing they were, many tutorials now double as ASMR videos. Some creators take the role-play approach, simulating the feeling of being in a makeup artist's chair, while others use makeup brushes to create soothing noises. Search for "ASMR nails," and you'll see many creators showing off their manicures as they make tapping and scratching sounds. Even Michelle Phan—the queen of beauty herself, with 8.6 million subscribers and counting—has created an ASMR video.
But for the most part, the people running actual research studies on ASMR are optimistic about the future. And it bodes well that the first paper published on the sensation adhered to the principles of open science. “Psychology is going through a period of change, where we are looking at how good our methods are, and how reliable and reproducible our findings are,” Davis points out. “I don’t see research in this area as any different from other fields of psychology. We were very keen to be very open about our work, and we uploaded our complete data set so anyone can check our results, or find new things that we hadn’t considered. This sort of openness doesn’t solve every problem in psychology, but we thought it was a good start.”
I forgot to mention and may be interesting to people curious about such effects. One "mantra" or intention that I have assimilated in silence and often keep repeating softly inside is "Bless All Beings". There's a famous Sanskrit mantra that basically says the same, but English also works, and may work better for Westerners as intentions need to have meaning, not just repeating syllabuses without understanding or intention.
Among the category of intentional ASMR videos that simulate the provision of personal attention is a subcategory of those specifically depicting the "ASMRtist" providing clinical or medical services, including routine general medical examinations. The creators of these videos make no claims to the reality of what is depicted, and the viewer is intended to be aware that they are watching and listening to a simulation, performed by an actor. Nonetheless, many subjects attribute therapeutic outcomes to these and other categories of intentional ASMR videos, and there are voluminous anecdotal reports of their effectiveness in inducing sleep for those susceptible to insomnia, and assuaging a range of symptoms including those associated with depression, anxiety, and panic attacks.