Autonomous sensory meridian response (ASMR) is defined as pleasurable tingling sensations in the head, scalp, back, or anywhere in the body in response to visual, auditory, tactile, olfactory, or cognitive stimuli.
Wikipedia page on the study of ASMR: https://en.wikipedia.org/wiki/Autonomous_sensory_meridian_response
ASMR also aids in relaxation and sleep. Many people experience ASMR differently. ASMR Universe gives the user the power to shape a complete universe of sounds.