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Autonomous sensory meridian response (ASMR), sometimes auto sensory meridian response,[2][3][4] is a tingling sensation that typically begins on the scalp and moves down the back of the neck and upper spine. A pleasant form of paresthesia,[5] it has been compared with auditory-tactile synesthesia[6][7] and may overlap with frisson.

ASMR signifies the subjective experience of "low-grade euphoria" characterized by "a combination of positive feelings and a distinct static-like tingling sensation on the skin". It is most commonly triggered by specific auditory or visual stimuli, and less commonly by intentional attention control.[1][8] A genre of videos which intend to stimulate ASMR has emerged, of which over 13 million are published on YouTube.