Image source, Getty Images. You might not have heard of "grima", but you have almost certainly felt it. It's a word to describe the feeling we get when we hear the sound of fingernails on a chalkboard, or a knife scratching a plate. Now psychologists in Spain are suggesting it should be considered its own emotion.Mar 2, 2017
The findings suggest that the fingernail-chalkboard sound triggers an uptick in communication between a region of the brain involved in hearing and another region of the brain involved in emotions.Dec 6, 2016
Researchers say the shape of the human ear may amplify certain aspects of the sound of fingernails or chalk scraping on a chalkboard to make it even more annoying to the listener. In addition, people's perceptions about these irritating sounds may increase stress levels and how they rate the sound.Nov 4, 2011
Oehler was one of the researchers who presented a paper on the subject at the recent Acoustical Society of America conference. He says the most obnoxious frequencies of the noise are amplified by the shape of the human ear canal — making people cringe when they hear it.Nov 9, 2011
Sounds which are worse than nails on a chalkboard. Which sounds drive our ears absolutely bonkers? A British study rated the screechy scrape of a sharp knife along the surface of a ridged metal bottle as the most unpleasant sound.Oct 18, 2012
0:191:31Why Does the Sound of Nails on a Chalkboard Give You the Shivers?YouTubeStart of suggested clipEnd of suggested clipThe shape of the human ear canal can amplify. Sounds of these frequencies. Now years ago that couldMoreThe shape of the human ear canal can amplify. Sounds of these frequencies. Now years ago that could have had its benefits if humans could better hear the sounds of people screaming.
Misophonia is a disorder in which certain sounds trigger emotional or physiological responses that some might perceive as unreasonable given the circumstance. Those who have misophonia might describe it as when a sound “drives you crazy.” Their reactions can range from anger and annoyance to panic and the need to flee.Dec 13, 2020
In a 2011 study, musicologists Michael Oehler and Christoph Reuter hypothesize that the unpleasantness of the sound is caused by acoustic resonance due to the shape of the human ear canal which amplifies certain frequencies, especially those in the range of 2000 to 4000 Hz (the median pitches mentioned above); at such ...