Topic: brain

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How do animals see in the dark?

How do animals see in the dark... and sometimes in color? Learn more about the night vision of the tarsier, cats, toads, and hawkmoths in this illuminating animation from TED Ed. Learn more about eyes in these videos.

The Importance of Staring Out Of The Window

Staring out the window is often associated with a lack of attention or productivity, but in this film from The School of Life, we examine the activity (or lack of activity) as a highly productive pursuit that we might...

How Old Is Your Body, Really?

Have you ever heard the statement that the cells in your body are completely replaced every seven years? Is this true? In this beautifully illustrated episode of Skunk Bear, NPR's Adam Cole explores how long our diffe...

I, Octopus – Science Friday

With thousands of chemically-sensitive suckers, color-changing skin, and a brain that literally stretches when they eat, octopuses seem like aliens living in our oceans. Understanding their physical adaptations and ho...

How do eyes work & how do glasses help us see?

Glass, water, and the eye are three different transparent mediums that change the direction of light, a phenomenon called refraction. Refraction in the eye helps us see by bending light into an accurately focused poin...

The Stroop Test

After we learn to read, recognizing words becomes an automatic behavior that our brains can process much faster than recognizing colors. For example, say these words: Red. Green. Blue. So what happens when we intro...

Debunking the “I will never need to use this…” myth

If you've ever heard the phrase, "I will never need to use this ever again," regarding a theorem of mathematics, or a scientific law, or a fact from the history of a far corner of the planet, consider this from astrop...

How do your eyes perceive color? – Physics Girl

When we talk about mixing colors, it's often because we're mixing paint, but what about light? The retinas in our eyes respond to light differently because of two types of photoreceptors: rods and cones. Rod cells hel...

How smart are dolphins?

Dolphins are well-known for being intelligent creatures... In fact, they're one of the smartest species on the planet. These cetaceans can communicate, cooperate, empathize, understand language, pass along their knowl...

Why do we sleep and how do different animals sleep?

Why sleep is such an important part of our lives? ...and on a related note, why is bedtime so important? Based on what our bodies (and other animal bodies) accomplish while sleeping, there are a few leading theories a...

Chimpanzees Would Cook if Given the Chance, Research Says

Would chimpanzees be interested in cooking their food? Would they have the patience to wait if given the opportunity? To find out these answers, how do you create a safe experiment that doesn't include fire or real co...

How To Stop Yourself Being Ticklish – with Dr Emily Grossman

Why do we feel ticklish? Why does it make us laugh? It’s hard to pin down a scientific definition – or explanation – of tickling. It’s a complex phenomenon, involving a range of sensory and neurological elements, whic...

How the Octopus Moves – ScienceTake

How do you move from here to there when you have eight long, flexible legs that radiate out from your head? After analyzing recordings of how an octopus moves, three Israeli researchers have determined something prett...

Fundamentals of Neuroscience Presents: Small Circuits

Small Circuits! This is one of the many wonderfully-presented lessons from Harvard's Fundamentals of Neuroscience free and open online course (or MOOC). While the video's terminology can be technical at times, the sim...

The benefits of a good night’s sleep – TED Ed

Sleep to remember! Remember to sleep! This TED-Ed focuses on those of us who are studying for tests or staying up late for deadlines, but The Benefits of a Good Night's Sleep can also help younger kiddos understand wh...

How playing an instrument benefits your brain – TED Ed

Your brain is a muscle. When you give it more challenging exercises, you're strengthening your brain's abilities to learn and grow. Now add some music to the mix: When you listen to music, multiple areas of your b...

Summertime Science: Sunburn, Sweat, and Wrinkly Fingers

Why do we sweat? Why do our fingers wrinkle in water? Why do we get sunburns? Joe Hanson explains it all in this summer science episode of It's Okay to Be Smart. Bonus: find out what those SPF numbers mean on your sun...

Paralyzed Woman Controls Robotic Arm With Thoughts

When Cathy Hutchinson controlled a robotic arm using a small sensor planted in her brain, it was a remarkable breakthrough in neurobiology and computer science. The sensor would recognize patterns or signals from her ...

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