The function of the glottis is to make several voicing sounds between the vocal folds when they vibrate. Voiceless consonants include the English h, f, s, p, t and k sounds. The glottis functions... The function of the glottis is to make several voicing sounds between the vocal folds when they vibrate. Voiceless consonants include the English h, f, s, p, t and k sounds.
Misophonia sufferers find these sounds more than just mildly annoying. Beginning in late childhood or early adolescence, the condition causes extreme anger, anxiety and terror when a trigger sound, such as chewing gum, is heard.
After discontinuing any gum chewing, all headache symptoms completely disappeared in 19 out of the 30 patients, and 7 others experienced some improvement in their symptoms. When participants started their gum-chewing habit once more, one third of the children experienced a relapse of headaches within a few days. It is believed that pressure on the temporomandibular joint caused by prolonged chewing caused the headaches. Exposure to ingredients in gum like aspartame may also be involved.