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.

Reference:
Barratt, E. L., & Davis, N. J. (2015). Autonomous Sensory Meridian Response (ASMR): a flow-like mental state. PeerJ, 3, e851.