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Published on 11 Mar 2016 | about 1 year ago

The majority of us can probably agree that the sound of nails on a chalkboard is unpleasant, but why is that? Theories range from evolutionary survival mechanisms to the anatomy of the human ear. Find out more in this episode of SciShow!

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Sources:
www.jneurosci.org/content/32/41/14184.full
www.ncl.ac.uk/alumni/news/page.htm
scitation.aip.org/content/asa/journal/jasa/124/6/10.1121/1.3006380
www.ncbi.nlm.nih.gov/pubmed/10848570
www.livescience.com/16967-fingernails-chalkboard-painful.html
www.smithsonianmag.com/ist/
www.theguardian.com/uk/the-northerner/2012/oct/10/newcastle-university-scientists-brain-unpleasant-sounds-reaction
www.psychologytoday.com/blog/i-got-mind-tell-you/201508/the-amygdala-is-not-the-brains-fear-center
.io9.com/5951439/what-is-the-most-cringe-inducing-sound-of-them-all
phys.org/news/2006-10-fingernails-chalkboard-garner-psychologist-ig.html
www.sound101.org/badvibes/horriblesound.php
philpapers.org/rec/MCDACI-4
thebeautifulbrain.com/2011/10/the-evolution-of-chalkboard-torture/
www.bu.edu/phpbin/news-cms/news/

Image Sources:
commons.wikimedia.org/wiki/File:10.1371_journal.pbio.0030137.g001-L-B.jpg
commons.wikimedia.org/wiki/Category:Amygdala
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