Today I Found Out

Why Do the Sounds of a Scraping Knife on a Plate & Fingernails on a Chalkboard Make Humans Cringe? (2020x16)

Date de diffusion: Jan 24, 2020

Get your first KiwiCo box free by clicking here! https://www.kiwico.com/brainfood If you happen to like our videos and have a few bucks to spare to support our efforts, check out our Patreon page where we've got a variety of perks for our Patrons, including Simon's voice on your GPS and the ever requested Simon Whistler whistling package: https://www.patreon.com/TodayIFoundOut This video is #sponsored by Kiwico. →Some of our favorites: https://www.youtube.com/playlist?list=PLR0XuDegDqP10d4vrztQ0fVzNnTiQBEAA →Subscribe for new videos every day! https://www.youtube.com/user/TodayIFoundOut?sub_confirmation=1 Follow Simon on social media: https://twitter.com/SimonWhistler https://www.instagram.com/simonwhistler/ Never run out of things to say at the water cooler with TodayIFoundOut! Brand new videos 7 days a week! More from TodayIFoundOut: Has Any Passenger Ever Landed a Commercial Airliner and How Likely is it You Could? https://youtu.be/bP_XPLFEMng Can Police Really Commandeer Your Vehicle Like in the Movies? https://youtu.be/eQC8IxoNAkg In this video: Few sounds cause humans to cringe more than nails across a chalkboard, a fork scraped on a plate, or a heavy metal chair dragged across a tiled floor. But what exactly is it about this sort of scraping noise that is so offensive to our brains that many even describe it as painful? Want the text version?: http://www.todayifoundout.com/index.php/2020/01/why-do-fingernails-on-a-chalkboard-or-scraping-a-plate-make-us-cringe/ Sources: https://en.wikipedia.org/wiki/Psychoacoustics https://en.wikipedia.org/wiki/Amygdala https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4079659/ https://doi.org/10.1121/1.3655174 https://web.mit.edu/jhm/www/Pubs/McDermott_2004_monkey_consonance_preferences.pdf https://en.wikipedia.org/wiki/Reticular_formation https://www.pnas.org/content/pnas/early/2015/09/24/1500968112.full.pdf https://www.ncbi.nlm.nih.gov/pubmed/20628439 https://www.ncbi.nlm.n