These reports have precipitated comparison between ASMR and synesthesia – a condition characterised by the excitation of one sensory modality by stimuli that normally exclusively stimulates another, as when the hearing of a specific sound induces the visualization of a distinct color, a type of synesthesia called chromesthesia. Thereby, people with other types of synesthesia report for example 'seeing sounds' in the case of auditory-visual synesthesia, or 'tasting words' in the case of lexical-gustatory synesthesia.
I’m glad that it’s at least showing up for you occasionally. It certainly seems to affect people differently and it’s an incredibly strange, though wonderful, phenomenon. I don’t pretend to understand it fully myself, and haven’t done research on it other than to check if it’s harmful, which from what I’ve seen doesn’t seem to be an issue. My reactions seem to have gotten more intense lately, sometimes to the point of having to pause the video for a short while in order to calm it down a bit.
In an era where social media fails to provide its users with a feeling of personal connection, ASMR steps in to bridge the gap. "The number one thing that we need as human beings an attachment. That's what it’s all about. We want to attach, we don't want to feel alone or isolated. Our body does that for us. So, when we feel good, we feel close, and we feel attached. So that's what the videos are tapping into on some level," she explained.
Many of those who experience ASMR report that some specific non-vocal ambient noises are also effective triggers of ASMR, including those like the sound of rain, fingers scratching or tapping a surface, the crushing of eggshells, the crinkling and crumpling of a flexible material such as paper, or writing. Many YouTube videos that are intended to trigger ASMR responses capture a single person performing these actions and the sounds that result.