Download a free audiobook version of "Hallucinations" and support TED-Ed's nonprofit mission- https-//adbl.co/2Kpt43k Check out our full book recommendation- https-//shop.ed.ted.com/products/hallucinations View full lesson- https-//ed.ted.com/lessons/what-causes-hallucinations-elizabeth-cox A condition called Charles Bonnet Syndrome can cause blind patients to hallucinate scenes in vivid color. fMRI studies show that these hallucinations activate the same brain areas as sight -- areas that are not activated by imagination. Other hallucinations also involve the same brain areas as real sensory experiences. What's going on? Elizabeth Cox details the science of hallucinations. Lesson by Elizabeth Cox, directed by Nerdo. Thank you so much to our patrons for supporting us on Patreon! Without you this video would not be possible! Mayra Urbano, Kostadin Mandulov, Alex Schenkman, Sdiep Sriram, Ivan Todorovic, Antero Semi, Yanuar Ashari, Mrinalini, Anthony Kudolo, Querida Owens, Hazel Lam, Manav parmar, Dwight Tevuk, Stephen A. Wilson, Siamak H, Dominik Kugelmann, Katie Winchester, David Rosario, Samuel Doerle, Be Owusu, Susan Herder, Savannah Scheelings, Prasanth Mathialagan, Yanira Santamaria, Chad Harper, Dawn Jordan, Chris Mathew, Constantin Salagor, Activated Classroom Teaching, Kevin Wong, Umar Farooq, Goh Xiang Ting Diana, Dmitry Neverov, Tushar Sharma, Cristobal Medina Moenne, Silas Schwarz, MJ Tan Mingjie, Yansong Li, Henry Li, Kyle Nguyen, Taylor Hunter, Noa Shore, Lex Azevedo, Merit Gamertsfelder, Bev Millar, Jhuval , SookKwan Loong, Daniel Day, Rodrigo Carballo, Marc Veale, Boytsov Ilya, Bozhidar Karaargirov, and ilya bondarik.

Check out our Patreon page- https-//www.patreon.com/teded View full lesson- http-//ed.ted.com/lessons/how-stress-affects-your-brain-madhumita-murgia Stress isn't always a bad thing; it can be handy for a burst of extra energy and focus, like when you're playing a competitive sport or have to speak in public. But when it's continuous, it actually begins to change your brain. Madhumita Murgia shows how chronic stress can affect brain size, its structure, and how it functions, right down to the level of your genes. Lesson by Madhumita Murgia, animation by Andrew Zimbelman.

Check out our Patreon page- https-//www.patreon.com/teded View full lesson- http-//ed.ted.com/lessons/how-playing-an-instrument-benefits-your-brain-anita-collins When you listen to music, multiple areas of your brain become engaged and active. But when you actually play an instrument, that activity becomes more like a full-body brain workout. What's going on? Anita Collins explains the fireworks that go off in musicians' brains when they play, and examines some of the long-term positive effects of this mental workout. Lesson by Anita Collins, animation by Sharon Colman Graham.

Check out our Patreon page- https-//www.patreon.com/teded View full lesson- http-//ed.ted.com/lessons/how-sugar-affects-the-brain-nicole-avena When you eat something loaded with sugar, your taste buds, your gut and your brain all take notice. This activation of your reward system is not unlike how bodies process addictive substances such as alcohol or nicotine -- an overload of sugar spikes dopamine levels and leaves you craving more. Nicole Avena explains why sweets and treats should be enjoyed in moderation. Lesson by Nicole Avena, animation by STK Films.

Check out our Patreon page- https-//www.patreon.com/teded View full lesson- http-//ed.ted.com/lessons/how-speaking-multiple-languages-benefits-the-brain-mia-nacamulli It's obvious that knowing more than one language can make certain things easier -- like traveling or watching movies without subtitles. But are there other advantages to having a bilingual (or multilingual) brain? Mia Nacamulli details the three types of bilingual brains and shows how knowing more than one language keeps your brain healthy, complex and actively engaged. Lesson by Mia Nacamulli, animation by TED-Ed.

View full lesson- http-//ed.ted.com/lessons/how-the-food-you-eat-affects-your-brain-mia-nacamulli When it comes to what you bite, chew and swallow, your choices have a direct and long-lasting effect on the most powerful organ in your body- your brain. So which foods cause you to feel so tired after lunch? Or so restless at night? Mia Nacamulli takes you into the brain to find out. Lesson by Mia Nacamulli, animation by Private Island.

View full lesson- http-//ed.ted.com/lessons/what-is-dyslexia-kelli-sandman-hurley Dyslexia affects up to 1 in 5 people, but the experience of dyslexia isn't always the same. This difficulty in processing language exists along a spectrum -- one that doesn't necessarily fit with labels like "normal" and "defective." Kelli Sandman-Hurley urges us to think again about dyslexic brain function and to celebrate the neurodiversity of the human brain. Lesson by Kelli Sandman-Hurley, animation by Marc Christoforidis.

View full lesson- http-//ed.ted.com/lessons/the-benefits-of-a-good-night-s-sleep-shai-marcu It's 4am, and the big test is in 8 hours. You've been studying for days, but you still don't feel ready. Should you drink another cup of coffee and spend the next few hours cramming? Or should you go to sleep? Shai Marcu defends the latter option, showing how sleep restructures your brain in a way that's crucial for how our memory works. Lesson by Shai Marcu, animation by Javier Saldena.

http-//ed.ted.com/lessons/what-percentage-of-your-brain-do-you-use-richard-e-cytowic Two thirds of the population believes a myth that has been propagated for over a century- that we use only 10% of our brains. Hardly! Our neuron-dense brains have evolved to use the least amount of energy while carrying the most information possible -- a feat that requires the entire brain. Richard E. Cytowic debunks this neurological myth (and explains why we aren't so good at multitasking). Lesson by Richard E. Cytowic, animation by TOGETHER.

View full lesson- http-//ed.ted.com/lessons/how-does-your-brain-respond-to-pain-karen-d-davis Ouch! Everyone experiences pain -- but why do some people react to the same painful stimulus in different ways? And what exactly is pain, anyway? Karen D. Davis walks you through your brain on pain, illuminating why the "pain experience" differs from person to person. Lesson by Karen D. Davis, animation by Brett Underhill.

Learn more about TED-Ed Clubs here- http-//bit.ly/2z8YFSo View full lesson- https-//ed.ted.com/lessons/are-there-universal-expressions-of-emotion-sophie-zadeh The 40 or so muscles in the human face can be activated in different combinations to create thousands of expressions. But do these expressions look the same and communicate the same meaning around the world regardless of culture? Is one person's smile another's grimace? Sophie Zadeh investigates. Lesson by Sophie Zadeh, animated by Estudio Bacuri. Thank you so much to our patrons for your support! Without you, this video would not be possible! Abhijit Kiran Valluri, Mandeep Singh, Sama aafghani, Vinicius Lhullier, Connor Wytko, Marylise CHAUFFETON, Marvin Vizuett, Jayant Sahewal, Quinn Shen, Caleb ross, Elnathan Joshua Bangayan, Gaurav Rana, Mullaiarasu Sundaramurthy, Jose Henrique Leopoldo e Silva, Dan Paterniti, Jose Schroeder, Jerome Froelich, Tyler Yoshizumi, Martin Stephen, Justin Carpani, Faiza Imtiaz, Khalifa Alhulail, Tejas Dc, Govind Shukla, Srikote Naewchampa, Ex Foedus, Sage Curie, Exal Enrique Cisneros Tuch, Vignan Velivela, Ahmad Hyari, A Hundred Years, eden sher, Travis Wehrman, Minh Tran, Louisa Lee, Kiara Taylor, Hoang Viet, Nathan A. Wright, Jast3r , Arkadii Skaiuoker, Milad Mostafavi, Singh Devesh Sourabh, Ashley Maldonado, Clarence E. Harper Jr., Bojana Golubovic, Mihail Radu Pantilimon, Sarah Yaghi, Benedict Chuah, Karthik Cherala, haventfiguredout, Violeta Cervantes, Elaine Fitzpatrick, Lyn-z Schulte, cnorahs, Henrique 'Sorin' Cassus, Tim Robinson, Jun Cai, Paul Schneider, Amber Wood, Ophelia Gibson Best, and Cas Jamieson.

Explore the theories of human consciousness and the science of how your brain works to create a conscious experience. -- Patient P.S. suffered a stroke that damaged the right side of her brain, leaving her unaware of everything on her left side. If someone threw a ball at her left side, she might duck. But she wouldn't have awareness of the ball or know why she ducked. Where does consciousness come from? Michael Graziano explores the question that has vexed scientists and philosophers for centuries. Lesson by Michael S. A. Graziano, directed by TED-Ed. Animation by Janis Aussel - https-//cargocollective.com/janisaussel Sign up for our newsletter- http-//bit.ly/TEDEdNewsletter Support us on Patreon- http-//bit.ly/TEDEdPatreon Follow us on Facebook- http-//bit.ly/TEDEdFacebook Find us on Twitter- http-//bit.ly/TEDEdTwitter Peep us on Instagram- http-//bit.ly/TEDEdInstagram View full lesson- https-//ed.ted.com/lessons/what-is-consciousness-michael-s-a-graziano Thank you so much to our patrons for your support! Without you this video would not be possible! Annamaria Szilagyi, Morgan Williams, Abhijit Kiran Valluri, Mandeep Singh, Sama aafghani, slTn lkhlyfy, Marylise CHAUFFETON, Marvin Vizuett, Jayant Sahewal, Quinn Shen, Caleb ross, Elizabeth Cruz, Elnathan Joshua Bangayan, Mullaiarasu Sundaramurthy, Jose Henrique Leopoldo e Silva, Dan Paterniti, Jerome Froelich, Tyler Yoshizumi, Martin Stephen, Justin Carpani, Faiza Imtiaz, Khalifa Alhulail, Tejas Dc, Benjamin & Shannon Pinder, Srikote Naewchampa, Sage Curie, Exal Enrique Cisneros Tuch, Ana Maria, Vignan Velivela, Ahmad Hyari, eden sher, Travis Wehrman, Louisa Lee, Kiara Taylor, Arkadii Skaiuoker, Milad Mostafavi, Rob Johnson, Clarence E. Harper Jr., Mihail Radu Pantilimon, Karthik Cherala, haventfiguredout, Violeta Cervantes, Elaine Fitzpatrick, Lyn-z Schulte, cnorahs , Henrique 'Sorin' Cassus, Tim Robinson, Jun Cai, Joichiro Yamada and Paul Schneider.

What are the origins of the Rorschach test and how does it work? Explore the inkblot tool psychologists use to test a subject's perceptions and mental health. -- For nearly a century, ten inkblots have been used as an almost mystical personality test. Long kept confidential for psychologists and their patients, the mysterious images were said to draw out the workings of a person's mind. But what can inkblots really tell us, and how does this test work? Damion Searls details how the Rorschach Test can help us understand the patterns of our perceptions. Lesson by Damion Searls, directed by Kozmonot Animation Studio. Sign up for our newsletter- http-//bit.ly/TEDEdNewsletter Support us on Patreon- http-//bit.ly/TEDEdPatreon Follow us on Facebook- http-//bit.ly/TEDEdFacebook Find us on Twitter- http-//bit.ly/TEDEdTwitter Peep us on Instagram- http-//bit.ly/TEDEdInstagram View full lesson- https-//ed.ted.com/lessons/how-does-the-rorschach-inkblot-test-work-damion-searls Thank you so much to our patrons for your support! Without you this video would not be possible! Cristian Cristian, Eric McDaniel, Avinash Amarnath, Tonya Ratliff-Garrison, Dmitry Neverov, Connor Roberts, Regina Zurbano, Laurence McMillan, Monkeypatcher, Jorge Rodriguez, Bradley Heinold, John simmons, Ramanan, Mark Byers, Marcus Poulsen, Lam Nguyen, Uira Maira Resende, Sebastiaan Vleugels, Adam Foreman, Jeremy Shimanek, Bethany Connor, Vivian & Gilbert Lee, Maryam Sultan, Peng, Tzu-Hsiang, Gabriel Balsa, Shafeeq Ansari, Norbert Orgovan, Dowey Baothman, Amer Harb, Courtney Thompson, Guhten, Jordan Tang, Juan, Sid, Tracey Tobkin, emily lam, Kathryn J Hammond, Elliot Poulin, Noel Situ, Oyuntsengel Tseyen-Oidov, Latora Slydell, Sydney Evans, Victor E Karhel, Bernardo Paulo, Eysteinn Gudnason, Andrea Feliz, Natalia Rico, Josh Engel, Barbara Nazare and Gustavo Mendoza.