Wednesday, March 1, 2017

No, Learning How to Play an Instrument Won’t Make You a Genius - But Who Cares?


When I was in grade school, a couple of my friends signed up for piano classes and my parents seized the opportunity to sign me up as well. After the first class, however, it was absolutely clear to me that I had no interest in music. I was seven years old and I had adamantly given up on any future career in music after that one piano class. I told my parents about my decision and they laughed it off saying “you just need to give it a chance”. After a few more classes I again pleaded with my parents to take me off the piano class. Seeing how determined I was in my decision, they promised that if I didn’t like the classes by the end of the month they would take me off them. What a deception that was. I ended up going to piano classes every other week FOR AN ENTIRE YEAR after what my parents had originally promised.

Why did my parents force me to take piano classes, even after it was clear that I had no interest in music? Well, like most people, they’d heard of all the great benefits that come with playing an instrument. Claims such as the (largely debunked) Mozart effect can lead anyone to think that playing music will turn us into geniuses as soon as we pick up an instrument. However, while playing music does positively affect the brain and how we think, these claims are often exaggerated, incomplete, or both. The truth is that if you want to have any significant effects on your brain, you must be engaged while playing an instrument.

As explained in an article from TIME magazine, studies have found that just going to music classes won’t result in any significant benefit to a child’s brain. Instead, they must actively engage in the lesson if they want to see any change in their neurons. In fact, neuron processing strength could be predicted by the attendance and participation of individual students. By using EEG machines, the study was able to monitor changes in neuron connections before, during, and after each music session. Furthermore, compared to students who regularly attended and practiced with actual instruments, students who attended music appreciation classes showed no significant change in their neuronal processing activity.

So, attending music classes won’t automatically turn us into Albert Einstein; time to throw away the violin and do something productive, right? Well, just wait a minute. As seen in Dr. Dye’s study on speech perception, musical training does correlate with an increase understanding of specific sounds. In this study he found that musicians (when compared to non-musicians) were better at discerning and understanding sentences that were masked by unintelligible noise originating at different sources. One of the reasons, the study argues, for the added benefit is that musical training places significant demands on auditory processing. Therefore, it is reasonable to expect that musicians will have a more fine-tuned ability to discern and focus on independent sounds and their sources.

Furthermore, the researchers that conducted the study discussed in the time magazine decided to track what effects the Harmony project, music program intended to serve low-income high school students, had on its participants. Incredibly, they found that 93% of seniors who attended the program graduated (compared to just a 50% graduation rate for the high school overall). Although learning music was not the only reason these students had the incredibly higher graduation rate, without a doubt, music played a significant role.

However, when we talk about the benefits of music on the brain and its functioning I feel as if we lose sight of the actual importance of music. The real reason anyone should be practicing an instrument is not so that they can better develop their brain; instead it should be because they actually enjoy it. I guess the perfect analogy is playing a sport. Sure it’s nice to be healthy, and practicing a sport is a fun way to keep active…but basketball is not my favorite because it burns 300 more calories per hour than baseball. Instead, it’s my favorite sport because I enjoy it, because I have a passion for it, because I can forget about everything when I’m on the court. The same should apply to practicing music. Yes, playing an instrument has benefits on brain development; and yes, these benefits are practical and helpful for most of us; but you can’t gain these benefits simply by going through the motions. It takes active engagement and dedication to reap any benefit from music; and this is not possible by someone who doesn’t enjoy playing an instrument. Therefore, the only reason you should be playing an instrument is because you enjoy it, period (but keep in mind that it’s probably made you a smarter person).


References

Locker, Melissa. 2014. "This Is How Music Can Change Your Brain." Time, December 16.
 <http://time.com/3634995/study-kids-engaged-music-class-for-benefits-northwestern/?iid=sr-link2>




Staying up late is costing the economy

Sleep is an important process that helps maintain our bodily and mental functions. However, sometimes life gets in the way of sleep. Whether it is working late, studying, or you just can’t sleep, sleep deprivation is going to take its toll. Some of the side effects of lack of sleep include memory loss, loss of cognitive function, suppressed immune system, and decreased reaction time to name a few. This means staying up late to study will mean you will remember less and your immune system suffers which leads to a cold or flu. Less sleep could also be dangerous if you are driving to work and your decreased reaction time causes an accident, hurting other people in the process.



Dr Daniel Cavanaugh, conducts his research in the subject of sleep to find the link to understanding the many consequences that result from sleep disorders. He also studies how the brain regulates sleep using the circadian rhythm as well as homeostatic drive. Cavanaugh et al.(2016) has shown that the control of sleep is bidirectional in terms of being controlled by both homeostatic and circadian rhythms. This was done by using sleep promoting neurons in Drosophila to perform experiments that assessed sleep change. They found that activating these sleep promoting neurons was more effective during the night or the middle of the day. This suggests that there is an effect on the sleep system by the time of day. At specific times of the day, the circadian system actively inhibits sleep which leads to the feeling that you are not tired. Cavanaugh also found that there is a homeostatic drive to sleep which usually occurs around sunset. This is your body’s cue that it is time to sleep. These two processes work together to maintain the body’s proper amount of sleep. I am sure everyone has experienced nights with less than 4 hours of sleep and even “pulling an all-nighter” to study for an exam. However, it is these things that contributes to the sleep deprivation.
Science daily recently showed that lack of sleep among our working population is costing our economy about $400 billion a year. This lack of sleep results in being late, missing work, and even working but not to the best of their ability. Sleep deprivation is seen to cause overall lower rates of productivity and raised mortality rates. These are situations in which working night shifts and shifts lasting longer than 12 hours can lead to dangerous situations involving vehicles, for example. It was also found that the US has the largest financial losses due to lack of sleep, followed by Japan. Not only could sleeping a full 8 hours every night help yourself to live a healthier life but it could help the U.S. save billions of dollars.


References:
RAND Corporation. (2016). Lack of sleep costing US economy up to $411 billion per year. ScienceDaily.
Cavanaugh, D., Vigderman, A., Dean, T., Garbe, D., Sehgal, A. (2016). The Drosophila Circadian clock gates sleep through time-of-day dependent modulation of sleep-promoting neurons. Sleep, 39, 345-356.



Musically talented in Conversation


“Yesterday I was going ou-”
“…and I was driving and then I start hea-”
“…the Oscars...they incorrectly announced La La”-
"Timothy!!! You just spil-"
The above passage attempts to recreate the chaos one experiences at parties. The chatter, laughter, and music all seem to mesh together in these environments. In fact, it’s almost a wonder how people are able to carry on their own conversations despite all of the distractions surrounding them. This phenomenon is known as the cocktail party problem. The cocktail party problem is the ability of being able to focus auditory attention on a specific stimulus and ignore all other stimuli: this effect is what allows party goers to focus on a single conversation in noisy rooms. While we all possess the ability to focus on a single voice and tune out all others, in the research paper titled “Musical training, individual differences and the cocktail party,” researchers analyze whether musicians are more equipped and better able to understand speech in noisy environments than non-musicians. A musician’s lifelong musical training (which includes discerning between subtle sounds such as pitch, timing, and timbre) cultivates their cognitive abilities and enhances their auditory attention and working memory. Similarly to music, speech perception relies on “detailed auditory analysis operating in concert with working memory and auditory attention.” Thus, researchers found that musicians performed significantly better than non-musicians when emulating the cocktail party problem.
Like the cognitive processes utilized when discerning voices and conversations at parties, musicians are required to differentiate between instruments and voices during musical performances. This similarity is the basis for the belief that musical appreciation can assist children with language based learning disabilities. Based in Los Angeles, the Harmony Project is a music program that offers at least five hours of musical lessons to students coming from low income backgrounds. The project serves demographics that have high illiteracy rates and low graduation rates. Partnering up with the Harmony Project, Northwestern University Neurobiologist Dr. Nina Kraus is investigating how being immersed in a musical environment and learning to play music affects reading comprehension. Knowing that musically talented individuals have greater success at hearing speech in noise, Dr. Kraus explains the connection between sound and reading stating, “Well there’s a connection with sound and reading in that when you’re learning to read you need to connect the sounds of words that you’ve heard for many years with the symbol on the page. So you’re making a sound to meaning connection.”
To measure the effects of musical training on hearing speech in noise, Dr. Kraus’ team looked at ways participants’ brain responses in areas critical for reading and learning differed over the course of the program. Students were asked to repeat back sentences presented to them in noisy environments. Kraus found that students with greater musical training had the ability to respond more precisely to meaningful elements in language. Thus, students with greater training repeated sentences more accurately than students with less training. Kraus notes that these positive changes associated with musical training can be useful in the classroom environment where students must listen to a teacher’s voice and absorb the information being presented in a noisy classroom. Both Kraus’ findings and the findings reported in the article “Musical training, individual differences and the cocktail party” implicate that musical experience strengthens cognitive processes critical for perceiving meaningful signals in noisy environments. These findings are just the beginning to understanding how humans discern speech. Difficulty hearing is unavoidable and plagues all, however, gaining a greater understanding of auditory attention can help researchers improve cochlear implants and understand the mechanisms involved in children with learning disabilities such as dyslexia.


References
National Science Foundation - Where Discoveries Begin. (n.d.). Retrieved March 01, 2017, from https://www.nsf.gov/news/news_summ.jsp?cntn_id=115958
Project gives young brains the benefits of musical training. (n.d.). Retrieved March 01, 2017, from http://www.pbs.org/newshour/bb/education-jan-june14-harmony_01-04/
Swaminathan, J., Mason, C. R., Streeter, T. M., Best, V., Kidd, J. G., & Patel, A. D. (2015). Erratum: Musical training, individual differences and the cocktail party problem. Scientific Reports,5, 14401. doi:10.1038/srep14401
Image: http://www.telegraph.co.uk/news/science/science-news/9913518/Cocktail-party-problem-explained-how-the-brain-filters-out-unwanted-voices.html


Finding Religion In The Brain



      The idea of religion can be mystical and unexplainable, but throughout history it served as the driving force for many decisions and was often the point of conflict for different groups. Whether you consider yourself religious or not, it would be impossible to deny the impact religion has had on the development of humans.

      Many people would consider religion to be an abstract idea; however, cognitive neuroscientists have taken on the task of  making religion more concrete by explaining how the brain processes religious ideas, as well as identifying which brain structures are involved. One neuroscientist in particular, Dr. Grafman, has taken on this challenge and conducts studies on individuals with high mysticism to see how their brain differs from an individual with low mysticism. During his presentation at Loyola University, Dr. Grafman explained that various parts of the brain are involved in creating religious experiences. However, in this particular study he specifically looks at injured veterans with lesions to the brain in the dorsolateral prefrontal cortex (dlPFC) and the temporal cortex (TC) to see what role those two areas play in mystical experiences. The participants were rated using a mysticism scale and compared to a control group of people with no brain injuries. The findings revealed that participants with lesions to dlPFC scored higher on the mysticism scale, suggesting that they are more likely to have a religious experience or believe in religion. Additionally, participants with lesions to  the TC scored similar to the control group. The results of the experiment support current data on the dlPFC and the CT.  The dlPFC is seen as a regulator of executive brain functions, so inhibiting its function through lesioning could cause someone to be more susceptible to experiencing a mystical moment. Additionally, other studies show that an overactive CT, due to epilepsy, can result in an increase in mystical moments, which supports the finding in this experiment. Overall, this study shines some light on the idea of religion and makes it less abstract by allowing us to identify areas of the brain that are involved in processing religious ideas and physically see who might be more susceptible to religious experiences.
      
         In tandem with Dr. Grafman's research, another scientist named Michael Persinger developed a machine that he uses to "induce the presence of God." While this might seem farfetched, the machine uses science rather than religion to do so. Persinger's machine uses electrodes to alter the electromagnetic field of the temporal which causes some subjects to sense a presence similar to what religious people describe. The machine does not have the same effect on all participants, but Persinger explains that some people are more predisposed to experience religious events than others. Nonetheless, the studies done by Dr. Grafman and Dr. Persinger supports the fact that religion can be found in the brain, and that the brain plays a significant role in how people experience religion.



Works Cited 

Irene Cristofori, Joseph Bulbulia, John H. Shaver, Marc Wilson, Frank Krueger, Jordan Grafman, Neural correlates of mystical experience, Neuropsychologia, Volume 80, 8 January 2016, Pages 212-220, ISSN 0028-3932, http://dx.doi.org/10.1016/j.neuropsychologia.2015.11.021.
(http://www.sciencedirect.com/science/article/pii/S0028393215302360)


http://science.howstuffworks.com/life/inside-the-mind/human-brain/brain-religion2.htm

Image:
http://www.drodd.com/images13/michelangelo-paintings13.jpg

One more reason to sleep longer




Why is it that most of us feel like we just simply can't ever get enough sleep? As your typical college student this question haunts me every morning as I contemplate how crucial it is to attend lecture that day. Regardless, I always seem to drag myself out of bed and soon my body adjusts to the daily routine. As Dr. Cavanaugh explained when it comes to sleep our body is regulated by the Two- Process Model. As the name suggests our body is regulated by two mechanisms the homeostatic, which is the one we seem to control when we force ourselves to pull an all-nighter and the circadian, which give us that much needed "second wind" the following day. Although getting little to no sleep may seem to have no consequences especially, when our body's circadian rhythm wakes us up the following day the truth is it is crucial for our overall health and well being. 

The Time magazine article The Sleep Cure: The Fountain of Youth May Be Closer Than You Ever Thought mentions a study conducted on more than 21,000 twins in Finland and found that those who were sleeping less than seven hours per day had a 21% to 26% greater chance of dying of any cause when compared to those who slept more than 8 hours. 

But why exactly does our body need sleep so badly to function properly? This question was answered by Dr. Maiken Nedergaard. She discovered that although on the outside sleep may seem trivial our bodies and most importantly our brains are actually repairing and cleaning themselves. More specifically "The brain runs checks on itself to ensure that the balance of hormones, enzymes, and proteins isn't too far off- kilter. All the while, brain cells contract, opening the spaces between them so that fluid can wash out the toxic detritus that can cause all kinds of problems if it builds up"(Park, Alice).

The good news according to Dr. Cavanaugh is that we can actually make up for lost sleep through a mechanism called sleep rebound. Every day our homeostatic mechanism builds up sleep pressure from the moment we wake up and continues to do so until we fall asleep. When we pull an all- nighter additional sleep pressure aggregates and what was once a single days' worth of sleep pressure becomes two. In response to this deprivation, sleep rebound increases our drive to sleep and tells our body it needs to sleep for longer in order to make up for lost sleep time and lower sleep pressure back to normal.

The answer to my initial question then is simple, we just can't seem to get out of bed in the morning because our body is telling us we need more sleep. If and when we allow ourselves to pay back all the sleep debt we owe not only will the drive to keep sleeping lower but our overall health will benefit as well. 

Works Cited
Cavanaugh, Danile. "The Drosophila Circadian Clock Gates Sleep Timing Through Interactions with Sleep-Promoting Neurons." Loyola University Chicago, 14 Jan. 2017, Chicago. Lecture.
Heid, Markham. "What's the Best Time to Sleep? You Asked." Time health, time.com/3183183/best-time-to-sleep/?iid=sr-link5. Accessed 1 Mar. 2017.
Park, Alice. "The Sleep Cure: The Fountain of Youth May Be Closer Than You Ever Thought." Time health, time.com/4672988/the-sleep-cure-fountain-of-youth/?iid=sr-link1. Accessed 1 Mar. 2017.

It's Not About How Much You Sleep, It's About When You Sleep and When You Function

Image result for circadian clockThe circadian clock of living things has been a very highly researched topic, and we have advanced our knowledge of it greatly. However, as we learn more, we create more questions for ourselves and come across many mysteries that still surround this internal clock. Nonetheless, what we do know has been very beneficial in helping the lifestyles of many people and preventing the sleep disorders that some face. One aspect that the circadian clock plays a big role in is how and when we sleep. It has been known that circadian regulation, homeostatic regulation, and stereotypical changes in brain activity play a huge role in our sleep. Most important of these, the circadian clock, generates a circadian rhythm, which is roughly a 24-hour cycle that regulates organisms' behaviors and processes. It is endogenously created, but it can be influenced by external cues such as sunlight and temperature. With this clock, we are able to follow a continuous day-night cycle that plays a huge part in how we function as human beings.

I had the pleasure of listening to Dr. Cavanaugh, a well-respected, intellectual individual who is a part of Loyola University Chicago’s science faculty. His research focused on finding out what regulates the timing of sleep. He has conducted sleep experiments mostly on fruit flies, and has made some important discoveries. He identified a group of neurons (201y-GAL4) that regulate sleep, and concluded that the circadian system is regulating the ability of the sleep-promoting neurons to drive sleep. This is a complex idea that still needs more research for backing, but it led me to think about how obstacles to the circadian clock, such as those that affect these neurons, play a role in how individuals function in their daily life. More specifically, how do college students’ sleep tendencies, which impact their circadian clock, influence their functioning in school?

It has been found that feeling sleepy during the day and staying up very late at night are the two causes of adolescents being at risk for academic, emotional, and behavioral problems. In a study conducted, a sleep questionnaire was given to public school students from grades 7-12. They were asked about their sleep, daytime alertness and sleepiness, completion of tasks, planning, and their emotional and behavioral issues. The study found that sleeping for a shorter period was not the problem; rather, feeling sleepy during the day was more detrimental to a student’s emotional and behavioral well-being.

On another note, I see many of my peers in college go through sleep deprivation. Many students are staying up to party, to hang out with friends, or to study for their brutal midterms. These students are not sleeping enough, and, if prolonged, it can put them at risk for stroke, diabetes, mood disorders, and risky behavior. These students are interfering with their internal clock, which will in turn affect the functions they need to do better in school, such as being attentive, absorbing knowledge, and performing well on exams. Adolescents cannot be staying up till absurd hours like 3 AM because our circadian-driven rhythm is lowest at times like these.


Thus, to help students, and anyone facing sleep issues, we need to understand the circadian clock and its many intricacies in order to comply with it. This will provide us with the most alert body and mind at the times we need to function optimally. This clock cannot be manipulated or worked against because it can lead to detrimental effects in human functioning and well-being. 

So, you might be wondering, what can you do to improve your sleep? There is still hope for your crazy sleep schedule! Sleep at an earlier hour everyday, do not be a “night owl”. Also, do not go on your phone before bed. Light and screen exposure prior to sleep means poorer sleep. In fact, even just having a device next to your bed can lead to poorer sleep! Instead, resist and wait to use your phone in the morning, and make sure you get light exposure by opening the blinds. Furthermore, find out what times during the day you are most alert, and use those times to study because your concentration and learning will be at an all-time high. Sleeping for a long period every night is not the answer. You need to consider what times you are at your best and make use of this knowledge to easily achieve the things you wish to do.


References:

Articles:
-"Adolescent Sleep Needs and School Performance." Sleep Disorders Advice & Help. Web. 01 March 2017
-"Circadian Rhythms Fact Sheet." National Institutes of Health. U.S. Department of Health and Human Services. Web. 01 March 2017.
-Klass, M.D. Perri. "'Night Owls' May Face Special Challenges." The New York Times. The New York Times. 14 Nov. 2016. Web. 01 March 2017.
-"Teens and Sleep." National Sleep Foundation. Web. 01 March 2017.

Images:
-"Academic Performance." Later School Start Times. Web. 01 March 2017
-"Liver Disease Caused by CHronic Drinking Can Change Your Body's Circadian Clock." The Fix. Web. 01 March 2017.
-Rathbun, Margaux. "Authentic Self Wellness." Relax. Web. 01 March 2017

Your Brain on Mysticism

            
If you have ever found yourself face to face with a ghost or seemed to float through time and space in an out-of-body experience, then you are one of the many who has had a mystical experience. Mystical experiences are thought to be the backbone of religious beliefs and have occurred across all cultures throughout human history. Although they are such a widely reported phenomenon, very little research has actually been done on why exactly they happen.
            Dr. Jordon Grafman of Northwestern University conducted a study examining the neural correlates of mystical experiences. Previous research has indicated that the dorsolateral prefrontal cortex (dlPFC) may be important in regulating mystical experiences. 
In earlier studies, the dlPFC showed decreased activity during prayer or religious exercise. Stronger activity of the dlPFC has also appeared in skeptics compared to believers, suggesting that believers might experience down-regulation in the dlPFC (Grafman). Using this knowledge, Dr. Grafman and his colleagues studied patients with brain injuries to the dlPFC or temporal lobes and predicted that impairment of the dlPFC would be associated with greater mystical experiences and that lesions to the temporal cortex would be associated with less mystical experiences. The results of the study indicated that their predictions were correct. Patients with lesions to the temporal cortex did not differ with healthy controls in amount of mystical experiences, while patients with focal lesions to the dlPFC experienced far more mystical experiences (Grafman). According to the authors of the study, these results could imply that the dlPFC plays a role in constraining naïve interpretations of the meaning of perceptual experiences. That is, the dlPFC prevents us from jumping to conclusions and labeling hard to explain phenomenon as supernatural.
David Rand, head of Yale University’s Human Cooperation Laboratory has another theory as to why some people might be more religious than others, and therefore more prone to mystical experiences. According to Rand, whether a person is deliberative or intuitive is the deciding factor on one’s level of religiousness. A deliberative person is more likely to think carefully and find a rational reason for his or her choices, while an intuitive person will often just go with his or her gut. Intuitive people, according to a study by Rand, are more likely to be religious or have a stronger belief in God (TIME). In his study, Rand and his colleagues used the Cognitive Reflection Test, which measured a person’s level of intuition and deliberation based on how they answered questions. Intuitive answers made some sort of sense, but were ultimately incorrect. Those who made more intuitive answers typically had a stronger belief in God (TIME). Therefore, patterns of thinking can determine how religious one is or isn’t. 

So, if someone is intuitive and seems to see a ghost, that person is more likely to interpret that scenario as mystical rather than try and come up with a more logical explanation. Is this related at all to Dr. Grafman’s study and the dlPFC? Possibly. If the dlPFC prevents us from making intuitive answers, could it be that deliberative people simply have a more active dlPFC? I’ll leave that question here for further research.

Sources

Basu, T. (2015, September 22). Here's Why Some People Are More Religious than Others. TIME. Retrieved from http://time.com/4038407/religion-intuition-deliberation/

Cristifori, I., Bulbulia, J., Shaver, J. H., Wilson, M., Krueger, F., & Grafman, J. (206). Neural correlates of mystical experience. Neuropsychologica ,80, 212-220. http://dx.doi.org/10.1016/j.neuropsychologia.2015.11.021

Images