ASMR

Autonomous sensory meridian response (ASMR) is a sensory-emotional phenomena that can be defined by the sensation of paresthesia, or a "tingling" or static-like feeling. In recent years, ASMR has been increasingly popular among younger generations and the media culture, despite a lack of scientific research on this phenomena. A person may experience tingling in other body parts such as the upper back, scalp, or neck. The experience is in response to specific audio, visual, or tactile stimuli, or even generated by intentional attention control. Whispering, quiet speech, tapping, scratching, subtle hand gestures, and close personal attention are some examples of these triggers (Barratt and Davis 2015).

In those who are susceptible to ASMR, it may be concluded that ASMR lessens depressive symptoms. Moreover, whether or not a person is susceptible to ASMR, watching ASMR videos lowers their heart rate. Furthermore, EEG recordings from studies demonstrate that ASMR videos increase beta power while decreasing alpha and theta power. These findings may support the theory that ASMR is associated with arousal and a type of concentrated attention, such as a "state of flow" or absorption. Since I prefer to watch these videos because they help me relax and enter a trance state, I really enjoyed learning about ASMR and its effects.

Reference: 

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9142458/