Imaging subjects' brains with fMRI as they reported experiencing ASMR tingles suggests support for this hypothesis, because brain areas such as the medial prefrontal cortex (associated with social behaviors including grooming), and the secondary somatosensory cortex (associated with sensation of touch) were activated more strongly during tingle periods than control periods.
ASMR, which stands for autonomous sensory meridian response, is still a relatively new creation. It describes a feeling of euphoric tingling and relaxation that can come over someone when he or she watches certain videos or hears certain sounds. What kind of visual or audio clips can create such a lovely feeling? It might surprise you, but the videos are of people doing incredibly simple, quiet, calming tasks, such as folding towels, brushing their hair, or flipping magazine pages. You might hear someone’s voice speaking in the background of the video, but not always. The audio clips often consist of voices whispering nice things (like "You are appreciated"), or contain the sound of tapping, scratching, or rain.
So many people have experienced the ASMR sensation as long as they can remember and for a long time many searched for visual aids on TV and YouTube. Shopping Channels, Antiques Roadshow and Children’s art shows to name a few have in the past been regularly frequented by people looking for instant triggers for their ASMR. However Bob Ross and his show ‘The Joy of Painting’ is considered by many to be the Godfather of ASMR!
While many colloquial and formal terms used and proposed between 2007 and 2010 included reference to orgasm, there was during that time a significant majority objection to its use among those active in online discussions, many of whom have continued to persist in differentiating the euphoric and relaxing nature of ASMR from sexual arousal. However, by 2015, a division had occurred within the ASMR community over the subject of sexual arousal, with some creating videos categorized as ASMRotica (ASMR erotica), which are deliberately designed to be sexually stimulating.