The Real Bee’s Knees: Stunning Micro-View of the Workers Behind Your Mother’s Day Flowers

Detail of Bee: Halictus ligatus, side view, covered in pollen from an unknown plant.

Detail of Bee: Halictus ligatus, side view, covered in pollen from an unknown plant. Morris Arboretum, Philadelphia, Pennsylvania. US Geological Survey Bee Inventory, January 2013. Image #PA_2013-01-04-14.53.42 ZS PMax

Spring is finally here for those of us in the Northeastern United States, and Mother’s Day seems like an appropriate time to share this stunning photographic portrait of Mother Nature. Here we have just one relentlessly efficient, always-present, yet frequently-overlooked, female worker that powers a major part of our ecosystem as well as an entire  industry.

This amazing image is courtesy of the artful scientists of the United States Geological Survey’s Bee Inventory and Monitoring Lab (USGS BIML). View more awe-inspiring images of Mother Nature’s busy bees at the USGS BIML Flickr photo stream.


GLIMPSE journal is an interdisciplinary supercollider presenting the work of leading and emerging scholars, researchers, scientists and artists from around the world, on the “art + science of seeing.” Some of our contributors are independent thinkers and doers with no formal institutional affiliations, and others are affiliated with the most respected research institutions in the world. Read all about them.

Galileo’s illusion solved by New York vision researchers

Portrait of Galileo Galilei, 1605-1607, by Domenico Tintoretto. Image courtesy of Wikimedia Foundation.

Portrait of Galileo Galilei, 1605-1607, by Domenico Tintoretto. Image courtesy of Wikimedia Foundation.

It was 1632, and the father of modern astronomy was perplexed as to why Venus, when observed by “naked” eye, would appear substantially larger than Jupiter, which was actually four times larger than Venus. He knew that Venus’ exaggerated size must have something to do with it’s halo, or “radiant crown” as he described it, and that this halo must have something to do with his eyes, and not the celestial objects themselves. Observations via telescope presented a more accurate visual representation of the mathematically-verifiable proportions of the planets.

Almost 400 years later, Neuroscientists Susana Martinez-Conde and Stephen L. Macknik, eloquently explain the January 2014 published findings of the State University of New York’s vision researchers Jens Kremkow, Jose Manuel Alonso and Qasim Zaidi:

By examining the responses of neurons in the visual system of the brain—to both light stimuli and dark stimuli—the neuroscientists discovered that, whereas dark stimuli result in a faithful neural response that accurately represents their size, light stimuli on the contrary result in non-linear and exaggerated responses that make the stimulus look larger. So white spots on a black background look bigger than same-sized black spots on white background, and Galileo’s glowing moons are not really as big as they might appear to the unaided eye.

These now-isolated differences in how our photoreceptors operate also explain why it is easier to read black text on a white page, than to read white text on a black page, a topic of interest to our typographer and font designer friends.

Do you love Galileo as much as we do? Check out the GLIMPSE Cosmos issue, available in our archives.


GLIMPSE journal is an interdisciplinary supercollider of works that examine the functions, processes, and effects of vision and its implications for being, knowing, and constructing our world(s). Each theme-focused issue features articles, visual essays, interviews, and reviews spanning the physical sciences, social sciences, arts and humanities. GLIMPSE contributors are leading and emerging scholars, researchers, scientists and artists from around the world. Some of our contributors are independent thinkers and doers with no formal institutional affiliations, and others are affiliated with the most respected research institutions in the world. Read all about them.

Eat Your Carrots! The Chemistry of Vision

 

18th-century hand-colored etching of woman pushing wheelbarrow full of carrots.

“Sandwich Carrots-Dainty Sandwich Carrots.” Hand-colored etching. Gillray, James, 1756-1815, engraver. Published by H. Humphrey, 1796 Dec 3d, London.
Image courtesy of Library of Congress.

You’ve probably heard the old adage about eating carrots for good vision. Well, there is some truth to it. Carrots contain a high concentration of β-carotene which gets broken down in the intestines to form the aldehyde (hydrocarbon) form of vitamin A, cis-retinal. Vision deteriorates in the absence of vitamin A because cis-retinal is trafficked along the protein, opsin, to produce electrochemical signals from light.

Our retinas perceive light in tiny particles called photons. As soon as these photons hit the retina, they isomerize cis-retinal to trans-retinal.  Trans-retinal then bonds to opsin to form rhodopsin. Rhodopsin is a purple pigment in the photoreceptor cells of the retina that reads blue-green light. This is the first step of the phototransduction cycle where photon energy is transferred to a series of signaling and diffusing protein complexes.

Retinal isomerism drawn with ChemDraw

Mutated forms of rhodopsin will be folded and transported differently and could lead to deteriorated vision or blindness. In more rare cases, mutations can cause rhodopsin to be constantly activated, even in the absence of light. Hypersensitivity, autoimmune disorders, and mutations can all cause rod cells in the retina to undergo apoptosis or cellular self-destruction. This sort of degradation of the retina will ultimately lead to deteriorated vision and eventually blindness.

The absorbance of cis-retinal is optimized at approximately 100 nanometers less than rhodopsin and it is a very rigid molecule because of the arrangement of its double bonds. Thanks to isomerism, we can see in color as opposed to ultraviolet! As all of the above demonstrates, our ability to see involves a series of complicated and precisely regulated bio-chemical processes, and carrots play their role.

We will be exploring more about vision loss and blindness in the upcoming GLIMPSE issue 10, Blindness. In the meantime, let us know your thoughts, research, questions, or experiences related to the topic.

If you’re interested in the chemistry of vision and why we perceive the section of the electromagnetic spectrum that we do, you might also be interested in GLIMPSE, issue 4, Color, and the article on “Human Potential for Tetrachromacy” by Kimberley A. Jameson and the online supplementary article.

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Myya McGregory is the GLIMPSE 2012 Science Writing Intern. She is a junior double-majoring in chemistry and economics at Williams College. She enjoys music, dance, and literature.

Movement, Orientation, and the Brain

The Mental Mechanics of Motion

Suzanne Farrell and George Balanchine in Don Quixote from the Library of Congress Archives

by Myya McGregory

George Balanchine, New York City Ballet master choreographer, once said, “see the music, hear the dance,” implying that dance is felt. Anyone who has ever attempted any type of movement that could be considered dance has probably been told to “feel the music” or perhaps “stop thinking and just move,” which can be frustrating, since in order to disconnect one’s brain, it must first be engaged. Learning new movements is not necessarily an easy task. Those who do it well make it look easy, but everyone goes through the same mental mechanics.

Here is where the production of γ-aminobutyric acid or GABA comes in. GABA is a neurotransmitter that is produced from the decarboxylation of glutamate in the brain.

GABA from the NIST database

Levels of GABA in the motor cortex play a large role in the development of our motor function and how we learn movement sequences. Studies in Current Biology by Stagg, Bachtiar and Berg have shown that the degree of motor learning and a decrease in the the magnitude of GABA are positively correlated. That means that the degree of short-term motor learning increases as GABA levels decrease in the motor cortex. As we try to learn motor functions, we engage the cerebellum which produces the enzyme catalyst that helps turn glutamate, the neurotransmitter that excites our neurons and helps us learn, into GABA which in turn inhibits neural activity.

Streeter et al. conducted a subsequent study that pinpoints what type of activity can increase our GABA levels. His team used magnetic resonance spectroscopy to monitor the levels of GABA in two different participant groups. One group was actively engaged in walking for sixty minutes three times a week for twelve weeks. The other group dedicated that same time to yoga. They found that subjects who participated in yoga had higher levels of GABA in the thalamic system overall. Yoga experts experienced a GABA increase of 26%. Those that were yoga beginners experienced a 13% increase. As you try harder to learn, your brain works to help mitigate GABA, but it’s these increased levels of GABA early on that make the initial learning curve the steepest.

GABA, however, is not completely bad, since it also boosts our mood and helps relieve stress. Therefore, the more you know, the more you can relax and in this case enjoy the calming benefits of yoga.

So next time you’re struggling in a dance class (or a yoga or zumba class, or struggling with any movement based activity for that matter), know that it gets better if you just stick with it — the secret’s in the GABA.

Movement, Orientation, and the Brain

A Look at the Work of Pina Bausch

December Dance Show by San Francisco Foghorn

Scientific research has shown that we perceive art (especially movement based art) with the help of mirror neurons. Mirror neurons are a set of cells in the brain that allow us to recall an action and imagine that action as our own so that we can experience it ourselves either vicariously or viscerally. This is what makes dance specifically such an emotive and provocative art form.

With the passing of the great choreographer and dancer Pina Bausch, many are reflecting on how she hacked the brains of her audience in pushing the boundaries of dance theatre.  As a master of empathy, Pina Bausch was able to explore the range of the audience’s reaction to familiar movements and experiences. As shown in her movie Pina 3D, she was able to work with a wide range of themes while always maintaining the human experience as the common thread.

Her dancers adored her for her compassion and care. She encouraged them to be vulnerable and from there they were able to understand her vision.

Her skill was telling stories of the human experience by incorporating colloquial movement language. One project that did this exceptionally well was «Kontakthof». Performed by three different age groups on different occasions, this piece unearths a series of social issues, fears, and insecurities in a lighthearted and occasionally disturbing manner. The setting however and the dancers themselves were quite colloquial and the dance moves of the dancers were in fact their own. As one watches this piece with dancers of each age group the perception of the piece changes. The same movements on a 15 year old girl will not be read the same on a 65 year old woman. What does this say about our mirror neurons and our ability for perception? Are our brains biased?

Today, more dancers and performance artists are beginning to push the boundaries of our perception with their work by considering the neural responses of their visual cues. Over the course of the next few weeks GLIMPSE  will be continuing this discussion with our readers, so share your thoughts and stay tuned!

Our Eyes Have a Taste for Gossip

Image courtesy of flickr.com member Mikleman

OK admit it: we all enjoy a little bit of gossip every now and then. Whether it be about a movie star or the next door neighbor, it piques our interest—especially if it happens to be negative. Perhaps a case of good old schadenfreude is the reason we take a guarded amusement in gossip, or maybe the simple fact that it’s more interesting to find out a person received a perfect score on a test through cheating rather than spending long hours at the library. But have we ever considered that hearing a juicy bit of gossip might actually be good for us? Researchers at Northeastern University concluded that people remember a face better when they hear negative gossip about a person than if they hear positive or neutral gossip, suggesting an evolutionary benefit to our guilty pleasure.  The ability to easily spot a possible liar, cheat, or all-around bad person provides social protection; we wouldn’t want to spend time with people who might betray or deceive us. While that seems like an obvious statement, what makes this study fascinating is that it’s all happening at the unconscious level. Even if what we hear is untrue, it’s in our nature to be cautious.

Not only does the research give us a good excuse for our interest in gossip but it’s also a little reassuring. It reminds us that that we (excuse the pun) look out for ourselves. Our well-being is a priority, regardless of whether we realize it or not.

Your Brain on God

Image courtesy of flickr.com member Sue Clark

Are science and religion as mutually exclusive as most like to believe? Perhaps not, NPR suggests in this series of articles and interactive media relating the study of neuroscience to religious experiences. GLIMPSE contributor Dr. Michael Persinger makes an appearance in part two of the series, ‘The God Spot.’ The article explores the possibility that the perceived presence and feeling of God is simply a product of temporal lobe stimulation. Persinger subjects the author of the article to his ‘God helmet,’ a contraption that stimulates the right temporal lobe with weak magnetic fields (the same helmet written about in our Text issue). And indeed, the author felt something when the helmet was placed on her head. While it might seem like an oversimplification to claim that spiritual feelings exist only because of neurons firing off, it’s a compelling idea that forces us to truly question what our brains are capable of.

We’re especially intrigued by ‘The Biology of Belief’, part four of the series. The article examines how much power the mind actually exerts over the body. Persinger claims the temporal lobe is responsible for spiritual encounters, but we have no say in the actions of our neurons. AIDS Researcher Gail Ironson studied the effects of prayer on HIV patients and found that those who prayed regularly maintained a higher volume of immune cells than those who did not believe in God. These findings may not be conclusive but they are refreshing. We may not be able to bend spoons and open doors with the power of thought, but being able to stave off an incurable illness is not a bad trade-off.

Is figuring out a way to measure faith harmful? Does it make religious experiences any less valuable if one knows the neurological source? The idea that science and religion have possibly found common ground can be a bit of an uncomfortable one; however, maybe we’ve seen them as opposing fields of studies for too long. Perhaps now is the time to start thinking differently.

Allison Nonko