What are those floaty things in your eye? Muscae volitantes

Sometimes, against a uniform, bright background such as a clear sky or a blank computer screen, you might see things floating across your field of vision. What are these moving objects, and how are you seeing them? Michael Mauser explains the visual phenomenon that is floaters.



Eye floaters are called muscae volitantes, Latin for “hovering flies". Floaters are visible because of the shadows they cast on the retina.

View full lesson: http://ed.ted.com/lessons/what-are-those-floaty-things-in-your-eye-michael-mauser

Top 10 cutest animal stories in science in 2014 - Nature video

From TV-watching marmosets to pretend baby penguins, this is Nature’s pick of the cutest animal stories in science this year:

Walking While Texting - National Geographic video



Texting shrinks peripheral vision to only 10%. "Cell phone use is on the rise and our eyes keep looking down. Try looking up and see what you've been missing."

Top medicine articles for December 2014

A collection of some interesting medical articles published recently:

What Kids Around the World Eat for Breakfast. “In many parts of the world, breakfast is tepid, sour, fermented and savory.” After birth, babies prefer the foods they were exposed to in utero, a phenomenon called “prenatal flavor learninghttp://buff.ly/1tbjAYf

High Milk Consumption Linked to Higher Mortality in Adults, Without Fracture-Prevention Benefits http://buff.ly/1wET24c

90% of workers perform better when listening to music, different genres of music are better tailored to certain tasks http://buff.ly/1xE1RJK

A Push to Back Traditional Chinese Medicine With More Data. Researchers Marry Modern Analytical Techniques to Centuries-Old Theories on What Makes People Sick - WSJ. U.S. government has a budget of $120 million to fund research on the efficacy and safety of alternative medicines http://on.wsj.com/1tKufv1

What You Learn in Your 40s - We still have time for a second act, but we’d better get moving on it - NYTimes -- If you worry less about what people think of you, you can pick up an astonishing amount of information about them http://nyti.ms/1tKvI4r

Colon Cancer on the Rise for U.S. Adults Under 50. Reasons behind trend unclear http://buff.ly/1xw3eha

Gluten Isn't the Only Culprit in Celiac Disease - patients have immune reactions to 5 groups of non-gluten proteins http://buff.ly/1xw3soC

Long-term marijuana use may change brain structure - orbitofrontal "shrinkage" seen on MRIs. The more THC is introduced in the system, the brain responds by reducing the number of THC receptors http://buff.ly/1xw451q

Misuse of contact lenses (wearing them too long, not cleaning them properly) causes 1 million eye infections/yr in US. "Contact lenses offer many benefits, but they are not risk-free. Keratitis can be a scary infection, but it is preventable if people follow healthy habits and take care of their eyes and their lenses". Some bad habits, such as sleeping with contact lenses, failing to clean and replace lens solution frequently, and letting contact lenses get wet while swimming or in the shower, greatly raises the risk for keratitis. People who wear their contact lenses overnight are more than 20 times more likely to get keratitishttp://buff.ly/1xw4iSn

AstraZeneca is developing an antibody treatment to reverse the blood-thinning effect of its heart drug Brilinta http://buff.ly/1qNSuDB

U.S. FDA approves Sanofi's MS drug Lemtrada | Reuters http://buff.ly/1xw4YHh

The articles were selected from Twitter and my RSS subscriptions. Please feel free to send suggestions for articles to clinicalcases AT gmail.com and you will receive acknowledgement in the next edition of this publication.

The language of lying - TED-Ed video

From TED-Ed: We hear anywhere from 10 to 200 lies a day. And although we’ve spent much of our history coming up with ways to detect these lies by tracking physiological changes in their tellers, these methods have proved unreliable. Is there a more direct approach? Noah Zandan uses some famous examples of lying to illustrate how we might use communications science to analyze the lies themselves.



Lesson by Noah Zandan, animation by The Moving Company Animation Studio.

View full lesson: http://ed.ted.com/lessons/the-language-of-lying-noah-zandan
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