Scientists are often portrayed in pop-culture as pedantic types, with personalities as stiff as their starched white lab coats. While they may have a pressing work ethic and incessant care for detail, their work is creative by nature. Scientists must create knowledge by designing and building experiments. In this way, a scientist is closer to a starving artist than to an automaton.
A scientific project might be spawned from reading a paper and finding an unanswered question, or just observing a phenomenon and wondering how it happens. This stage is quite exciting – you imagine yourself doing experiments that will answer your question (or you imagine collecting data using some brand-new technique, and the results would be unlike anything anyone’s ever observed). The prospect of discovering something new is as thrilling as falling in love. (more…)
Posted by Grigori Guitchounts on October 12, 2016
A few weeks ago I was having a discussion about mathematical models for the prediction of the movements of the stock market. The question was whether there was any use to developing complex algorithms trying to predict these fluctuations. My friend (an economist) argued that while he admits the market value isn’t truly random, incorporating random variables may be the best model we have for it. It turns out that many mathematicians (and quants, economists who analyze market fluctuations using algorithms) have been using “random” models for their predictions. These range from sequences randomly drawn from log-normal distributions, to chaotic systems that may allow for the prediction of market crashes and other rare large movements. I was fascinated by the idea of randomness as a model for complex systems. It seemed particularly interesting to explore this in the context of biological processes, especially when the laws of thermodynamics have described that all physical phenomena drift towards the chaotic state of maximum entropy. Could randomness be a model for circuit wiring and function in the brain?
The Drosophila mushroom body, shown in the MB010B-GAL4 line. Courtesy of Katrin Vogt.
Posted by Jasmine Reggiani on August 21, 2016
We make decisions every day. Decision-making is a way by which we exert control over our behavior, mood and even the course of our lives. One key element in decision-making is self-control. This is often seen when we have to make that extremely difficult decision between another double cheeseburger and a healthier salad. While that may seem difficult enough on its own, many decisions, such as having to choose which graduate program to join or which answer to circle on an exam, come with substantial amounts of stress. This stress can guide or compromise the decisions we make. So, how do stress and self-control come together during decision-making? What is the neurobiological basis underlying this convergence?
Posted by Sivapratha Nagappan on June 21, 2016
I recently had the opportunity to write a post for Nautilus on a subject that is dear to me – the use of crows and other intelligent members of the corvid family for neuroscience research. Corvid intelligence has been noticed by humans for millennia, and more recently by ethologists and psychologists. The fascinating thing about these animals is that like all birds, they do not have a neocortex – the part of the mammalian brain that has countless times been implicated in intelligence. Now, there is just one lab in the world – Andreas Nieder at the University of Tübingen – that has started peering into the brains of these fascinating creatures to try to understand how crows’ cortex-less brains enable them to perform amazing cognitive feats. You can read the full story on Nautilus.
The post received moderate praise (thanks, mom!), but some of the comments on Nautilus struck me because they focused not on the ideas or experiments I proposed, but on the treatment of animals in research. Ricky, for example, wrote: (more…)
Posted by Grigori Guitchounts on May 17, 2016
Today, let’s throwback to the multiple comparisons problem and relate it to something new: Open Science.
Gold Diggers in Australia (Edwin Stocqueler, 1855)
Posted by vivianhemmelder on May 12, 2016
If you aren’t asleep when the clock strikes three in the early morning, your eyelids get heavy and your brain feels like mush. You still have that paper to finish writing and you want to stay awake but staying awake is a struggle, a fight against our own brain. We have all been there (especially during finals week). With today’s post, lets look at how our brain regulates sleep and why we spend our days alternating between sleep and wakefulness?
Posted by Sivapratha Nagappan on April 26, 2016
In 2015 The Danish Girl, Ruby Rose, Caitlyn Jenner, and Transparent paved the road for trans-visibility in mainstream media. This has brought a great deal of attention and debate to the medical and political scene, but a large gap still remains between policy making and our understanding of how trans-sexuality develops through childhood and adolescence, and how we can alleviate the pain and discomfort for trans-adolescents of going through the physical changes puberty. This year the NIH launched the largest longitudinal study on long-term psychological and medical effects of puberty suppressors, a drug for sex reassignment therapy for adolescents with gender dysphoria1.
Lili Elbe (1926), born as Einar Magnus Andreas Wegener, a Danish transsexual painter whose life was portrayed in the movie The Danish Girl
Posted by Jasmine Reggiani on April 7, 2016
This episode of Brain Celebrities will take us to the mountainous highlands of New Guinea, where the Fore people live. Until the 1960’s, the Fore had an interesting habit: they ate their dead. This gruesome tradition might help us understand neurological diseases such as Creutzfeldt-Jakob and Alzheimer’s disease.
Posted by vivianhemmelder on March 29, 2016
Not all drugs can completely change who we are. Cocaine is one of the few with this power. Like many other psychoactive drugs, cocaine was first used as an anesthetic, but its potential effect on one’s mind and will was soon discovered and overshadowed its original usage. Cocaine’s power does not lie within the molecule itself, but rather in its interaction with the brain’s reward system (see a previous TBT post for the discovery of this system).
Posted by Stephen X. Zhang on February 23, 2016
“February is my favorite month.” said no one living in Boston ever. The short days, cold temperatures, and repetitive snow really throw a dagger (presumably made of ice) into good times. I tend to think of Dec-Feb as my hibernating months; I am more lethargic, less motivated, and my fiancé and labmates can vouch for the fact that I am slightly more irritable than the good natured loving person I always am in better weather. I’ve come to attribute my noticeable seasonal downswing to Seasonal Affective Disorder, or SAD (an acronym that ironically makes me quite happy), a self-diagnosis I probably made from seeing a commercial. Being the curious graduate student that I am I decided to do a little research on the subject and see what I could learn—really trying to go above and beyond what pharmaceutical advertising taught me.
Boston Winter, 2015. Image from CBS News Feb. 16, 2015
Posted by Kathryn on February 17, 2016