Autonomous Sensory Meridian Response (ASMR)

An internal sensory-emotional phenomenon, in which individuals reliably experiences [a] deep relaxing and pleasant tingling, static-like sensations across the scalp, back of the neck and at times areas like the shoulders, back, and limbs. This sensation is often in response to a range of specific triggering audio and visual stimuli (“ASMR triggers”) like whispering, tapping, hand movements, gentle sounds, light touch, and personal attention. Related to, but distinct from, aesthetic chills. See also aesthetic emotions.

Reference:

Barratt, E. L., & Davis, N. J. (2015). Autonomous Sensory Meridian Response (ASMR): a flow-like mental state. PeerJ, 3, e851. https://doi.org/10.7717/peerj.851