ASMR stands for Autonomous Sensory Meridian Response. It refers to a tingling sensation that typically begins on the scalp and moves down the back of the neck and upper spine in response to certain auditory, visual, or tactile stimuli. This sensation is often described as deeply relaxing and can induce feelings of euphoria or calmness in some individuals.

ASMR experiences are highly subjective, and not everyone experiences them or responds to the same triggers. Common triggers include gentle whispering, tapping sounds, crinkling noises, soft spoken voices, personal attention (such as someone brushing hair or applying makeup), and various repetitive movements.

ASMR videos have gained popularity on platforms like YouTube, where creators known as "ASMRtists" produce content specifically designed to trigger ASMR responses in viewers. These videos often feature the aforementioned triggers and are intended to help people relax, sleep, or alleviate stress and anxiety.

Although ASMR has garnered a significant following and anecdotal evidence suggests its potential benefits for relaxation and stress relief, scientific research on the phenomenon is still in its early stages, and more studies are needed to fully understand its mechanisms and effects on the brain and body.