You don't actually have a "reptilian brain" somewhere deep in your head making you act like a salty crocodile, so where did that idea even come from? Hosted by: Stefan Chin Head to scishowfinds.com/ for hand selected artifacts of the universe! ---------- Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Lazarus G, Sam Lutfi, D.A. Noe, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, Tim Curwick, charles george, Kevin Bealer, Chris Peters ---------- Looking for SciShow elsewhere on the internet? Facebook: www.facebook.com/scishow Twitter: www.twitter.com/scishow Tumblr: scishow.tumblr.com Instagram: instagram.com/thescishow ---------- Sources: books.google.ca/books?hl=en&lr=&id=4PmLFmNdHL0C&oi=fnd&pg=PA1&dq=triune+brain+theory&ots=y9hgDk_Q3c&sig=VIQqd3yxyNZKx2MAD11SEDbSff4#v=onepage&q=triune%20brain%20theory&f=false books.google.ca/books?hl=en&lr=&id=uRuu_2RRt00C&oi=fnd&pg=PA9&dq=triune+brain+theory&ots=QI9Ora3QsH&sig=mz6EKjYKpBjMKwOopQelXHUvuyg#v=onepage&q=triune%20brain%20theory&f=false opentextbc.ca/anatomyandphysiology/chapter/13-1-the-embryologic-perspective/ www.ncbi.nlm.nih.gov/pmc/articles/PMC2917081/ www.sciencedirect.com/science/article/pii/S0960982211001084 scholar.harvard.edu/files/jvitti/files/cephalopodcognition.pdf [PDF] authors.library.caltech.edu/25078/1/Evolving_Brains.pdf [PDF] www.frontiersin.org/articles/10.3389/fnhum.2015.00237/full www.ncbi.nlm.nih.gov/pmc/articles/PMC4406946/ www.ncbi.nlm.nih.gov/pmc/articles/PMC3260787/ www.ncbi.nlm.nih.gov/pmc/articles/PMC3543080/ ------ Images: www.istockphoto.com/photo/crocodile-toy-on-isolated-gm983409764-266951448 www.istockphoto.com/vector/pipes-cover-design-gm861702402-142658261 www.istockphoto.com/vector/set-of-burger-icons-gm823606324-133332397 www.istockphoto.com/vector/colored-cover-gm860109104-142093005 www.istockphoto.com/vector/brain-gm97234908-18319251 www.istockphoto.com/vector/colorful-vintage-brain-illustration-isolated-on-blue-bg-gm935788622-256027145 www.istockphoto.com/photo/monkey-figure-gm464461676-58517860 www.istockphoto.com/photo/octopus-gm891975152-246939619 www.istockphoto.com/photo/pair-of-nesting-scarlet-macaws-gm148948833-20873654 www.istockphoto.com/photo/plastic-rat-gm174673895-9164955

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