About 6 years ago there was no such term to describe this experience. “Instead, a few people on obscure message boards talked about their curious triggers: whispering, the TV show Big Brother and, of course, Bob Ross.”

Slowly, a community began to form around people who realize this tingling feeling was not unique to them

First group to discuss ASMR

The development of ASMR & ASMR Tribe

https://groups.yahoo.com/neo/groups/sos_08/info

 

The first video in an attempt to generate ASMR, 2009

Auto Draft 4

Video themes have evolved quickly in only a few years, as more people find ASMR and more creators emerge.

The term “ASMR” slowly began to gain traction in 2010; Around 2011 it took off in Google and Youtube searches.

 

 

reference:http://mashable.com/2015/01/26/asmr-youtube/