Author Archives: glam

The Art of Acupuncture

Have you or someone you know experienced a persisting headache that didn’t go away even after taking painkillers? If you were from a Chinese family like mine, perhaps the first remedy would be the suggestion of Acupuncture: the practice of penetrating skin on certain areas of the body with needles to “heal” physical pains and ailments. For over thousands of years, the Chinese have been using this method to treat pains, allergies, paralysis, asthma and many other illnesses.

A sterile needle used in Acupuncture (lengths may vary). No drugs are introduced into the body. Source: Wikimedia Commons

As a victim of these needles, I had wondered, how could pricking one’s body with very fine needles provide relief of ailments? Could science be used to explain this treatment? First, let’s look at the basic concepts of this practice.

Qi and the Meridians

Acupuncture practitioners believe that aches and pains are a result of blockage or irregular flow of Qi (pronounced “chee”): life energy that flows throughout the body of all living things. This “Qi” flows throughout the body via pathways or Meridians, which are known to reach tissues of the skin, muscles, bones, joints and organs. Unlike the conventional needles used for giving shots, acupuncture needles are very thin and do not puncture or damage tissues. Inserting these needles in certain areas (known as pressure points) of the meridians unblock or assist the proper flow of Qi, ultimately relieving the individual of ailments.

 Outline of the different meridians in the body.
Source: Wikimedia Commons

Seems pretty far-fetched right? The idea of fixing the flow of “magical life energy” inside one’s body isn’t exactly convincing to scientists and especially those who hate needles. However, a large abundance of testimonials, reviews and research articles have repeatedly claimed the effectiveness of acupuncture and this in fact, has garnered the interest of many western doctors and researchers.

A Scientific Approach

In an attempt to provide a scientific explanation for the effects of acupuncture, researchers have studied the impact of needle insertions on the brain using fMRI. It was found that triggering certain pressure points decreased the activity in structures of the brain involved with pain sensation, with no negative effects on other areas of the brain.

In addition, several studies have also discovered the correspondence between pressure points and nerve bundles or muscles within the body. For example, an individual having a heart attack will experience pain running from their chest to the length of their left arm. Coincidentally, this pathway is associated with what acupuncture practitioners know as the “heart meridian”. One study finds the stimulation of this area to affect heart rate and areas of the brain associated with cardiac muscle regulation.

Although many doubts still remain about the evidence behind acupuncture treatments, interest in this practice has become increasingly popular, with more and more evidence supporting the effectiveness of these needle insertions.

Check out the video below for more information on Acupuncture

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Video from user: aguinther

   – Grace Lam

 

Insight on Eyesight: Vision Correction While You Sleep

“You wore glasses before?”
“Yup.”
“Are you wearing contact lenses right now?”
“Nope, I only wear them when I sleep.”
“What?! You can do that?”

That was the typical response I got when people found that I wore contact lenses to sleep. At a very young age, I developed a common eye condition known as nearsightedness or Myopia; I could only see close objects clearly and objects far away appeared blurry. As my eyesight got worse at an abnormally fast rate, my optometrist (a doctor specializing in eye care) recommended me to wear “night lenses” to correct my vision, a practice known as Orthokeratology (Ortho-k).


Some Ortho-K lenses that I own
Copyright: Grace Lam 

How do you develop Myopia?

Myopia is typically an inherited condition and often develops in children ages 8-12.  This condition progresses very quickly at young ages due to the rapid growth of tissues in the eye while the eye is constantly elongating (growing in the forward-backward direction). Also, engaging in “close-up activities” such as reading and using the computer for extended periods of time can speed up the development of nearsightedness.

In order to see objects clearly, the image of the object must be focused on the retina. This is done by the lens in your eye (see image below), as it thickens when looking at close objects and flattens when looking at objects far away. According to researchers at the Ohio State University College of Optometry, the lens in patients with Myopia do not thin or flatten out like those of normal individuals. This causes the image to be focused in front of the retina rather than directly on it, thus resulting in a blurred image of objects that are far away.


The main areas of the eye affected in Myopia
by the National Eye Institute via Wikimedia Commons

How does Orthokeratology help?

The purpose of Ortho-k is to provide vision correction without the complications of surgeries and since changes cannot be made to the lens without opening up the eye, the shape of the cornea is altered instead (see image above). This is accomplished by wearing specially fitted contact lenses when sleeping.  As the cornea is also an important structure that helps focus images perceived by the eye, altering its shape effectively can compensate for the shortcomings of the lens and ultimately refocus the image back on the retina. As a result, myopic patients can once again see objects at close and far distances clearly. Check out the video below for more on Myopia and Orthokeratology.

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Youtube video by EyeContactOptometry

Research has shown that the use of Ortho-k lenses slow the progression of myopia, which is important to many myopic patients. I prefer night lenses because I can’t feel them when I sleep and when I take them off in the morning, I have 20/20 vision just like everyone else. Orthokeratology may not be the right treatment for everyone, but it can be advantageous for those who find glasses and day lenses inconvenient.

– Grace Lam

 

Action Games: Tools for Improving the Mind?

Student playing Counterstrike Source
By ario_ via Flickr Creative Commons

Often, when we are asked to describe a “video gamer”, we think of a person lazing around in front of their computer or tv, wasting time playing games as their brain turns to mush. Personally, I enjoy playing video games once in a while, but I didn’t think much of them, other than for entertainment. That was until I took a psychology course at UBC and discovered that people who played action video games often had better spatial attention than the average non-gamer.

Busy Restaurant Scene
By kenudigit via Flickr Creative Commons

What is Spatial Attention?

Imagine that you’re at a restaurant with some friends; people nearby are chatting loudly, waiters and waitresses are hurrying back and forth with plates, phones are ringing, background music is playing and yet, you are able to ignore these distractions and focus on the conversation you are having with your friends. This is your spatial attention at work. You are shutting out the unnecessary sensory inputs and only engaging in the information relevant to your conversation.

Gamers vs. Non-Gamers

study conducted at the University of Rochester by D. Bavelier and associates, found that VGPs (video game players) displayed greater suppression of irrelevant information than NVGPs (non video gamer players). Subjects were asked to press a button to indicate whether a specific shape was present or not in the  given visual stimuli, which included various shapes and moving distractors. As a result, the researchers concluded that VGPs expressed shorter reaction times, suggesting that they are more effective in filtering out irrelevant information. Furthermore, fMRI brain imaging showed that areas involved in spatial attention were less engaged in VGPs than in NVGPs. In other words, non video game players required more effort to ignore distractions, unlike video game players who seemed to do it almost automatically.

In an attempt to identify differences in cognitive functions between VGPs and NVGPs, researchers assessed numerous individuals in their attention, memory and executive control skills. Compared to non-gamers, it was found that those with gaming experience could track faster moving objects, had better visual short term memory, switched between tasks more quickly and were more effective in mentally rotating objects. Interestingly enough, the researchers also suggest that non-gamers could potentially improve their cognitive skills with increased video game experience.

Have 18 minutes to spare? (probably not..) But for those who are really interested, here is a video of cognitive researcher Daphne Bavelier giving a talk about the effect of video games on our brains. She addresses topics such as eyesight, attention, multi-tasking and much more. I found this quite interesting.

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Youtube video from user TEDtalksDirector

Although  video game players overall display better cognitive performance than non-video game players, it does not mean you should spend most of your time now playing video games in place of studying or other important tasks. However, the next time you decide to take a study break, consider playing an action game. With the right dose, you can de-stress and potentially improve your spatial attention at the same time!

– Grace Lam

 

 

Action Games: Tools for Improving the Mind?

Student playing Counterstrike Source
By ario_ via Flickr Creative Commons

Often, when we are asked to describe a “video gamer”, we think of a person lazing around in front of their computer or tv, wasting time playing games as their brain turns to mush. Personally, I enjoy playing video games once in a while, but they were of no value to me other than for entertainment. That was until I took a psychology course at UBC and discovered that people who played action video games often had better spatial attention than the average non-gamer.

What is Spatial Attention?
Imagine that you’re at a restaurant with some friends; people nearby are chatting loudly, waiters and waitresses are hurrying back and forth with plates, cell phones are ringing, background music is playing and yet, you are able to ignore these distractions and focus on the conversation you are having with your friends. This is your spatial attention at work. You are shutting out the unnecessary sensory inputs and only engaging in the information relevant to your conversation.

Gamers vs. Non-Gamers

A study conducted at the University of Rochester by D. Bavelier and associates, found that VGPs (video game players) displayed greater suppression of irrelevant information than NVGPs (non video gamer players). Subjects were asked to press a button to indicate whether a specific shape was present or not in the  given visual stimuli (figure 1), which included various shapes and moving distractors. As a result, the researchers concluded that VGPs expressed shorter reaction times, suggesting that they are more effective in filtering out irrelevant information. Furthermore, fMRI brain imaging showed that areas involved in spatial attention were less engaged in VGPs than in NVGPs. In other words, non video game players required more effort to ignore distractions, unlike video game players who seemed to do it almost automatically. 

In an attempt to identify differences in cognitive performance between VGPs and NVGPs, researchers assessed numerous individuals in their attention, memory and executive control skills. Overall, it was found that experienced gamers could track faster moving objects, posessed better visual short term memory, were quicker at switching between tasks and were more effective in mentally rotating objects than non-gamers. Interestingly enough, the researchers also suggest that non-gamers could potentially improve their cognitive skills with increased video game experience.

Have 18 minutes to spare? (probably not..) But for those who are really interested, here is a video of cognitive researcher Daphne Bavelier giving a talk about the effect of video games on our brains. She addresses topics such as eyesight, attention, multi-tasking and much more. I found this quite interesting.

YouTube Preview Image

 

Although  video game players overall display better cognitive performance than non-video game players, it does not mean you should spend most of your time now playing video games in place of studying or other important tasks. However, the next time you decide to take a study break, consider playing an action game. With the right dose, you can de-stress and potentially improve your spatial attention at the same time!

– Grace Lam