Frisson typically lasts a few seconds, and involves piloerection-commonly known as goosebumps-and a release of dopamine. Some scientists believe that the sensation is tied to moments in music that are unexpected, and thus trigger a pleasurable version of our fight-or-flight response. One psychologist recorded frisson as a symptom of an SEM, or a "strong experience related to music." People who experience SEMs can also exhibit tears, elevated heart rate, and feelings of giddiness.