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Friday, February 19, 2010
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Title:Not merely slipping away: Forgetting requires biochemical action
Author:Katie Moisse
Date:Feb 19, 2010
Website:http://www.scientificamerican.com/blog/post.cfm?id=not-merely-slipping-away-forgetting-2010-02-19
Submitted by:Jessyca B
According to the website Scientificamerican.com under observations no matter how much effort we use to remember all of the information we look at before a test, as soon as we look at the test or quiz we forget basically all of what we studied the day before. Forming memories is quite an endeavor and is a long process; yet losing them takes nothing at all with the amount of information overloads our brains receive daily. The article stated that the authors of this study, Yi Zhong and his colleagues from Tsinghua University in Beijing, and from the Cold Spring Harbor Laboratory in Cold Spring Harbor, New York, discovered this because of studies on fruit flies. At first the flies learned about one of two certain odors having a negative consequence and the other a positive. During the second they were introduced to two new smells and their penalties, this test was called interference learning because this test interferes with the memories of the first one. The 3rd and final test is called the reversal test because they reversed the penalties of the first two odors, but what these test showed all together was they showed memory decay over time plus the suppressed the ability to forget; as in that the flies preformed better in the beginning but worse later on, because the effects were independent of forming memories.
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Title: Energy Drinks Work -- In Mysterious Ways
http://www.sciencedaily.com/releases/2009/04/090415075142.htm
Science Daily (April 15th, 2009 )
Author: adapted materials from Wiley-Blackwell
According to this article Ed Chambers did a study on sports drinks. They gave athletes high surgery drinks that contained glucose which is a sugar. Maltodextrin which is carbohydrate, or a plain drink. The plain one had artificial sweeteners in it. They gave the athletes a challenge and all of them rinsed their mouths with one of the three examples. The Athletes that were given the glucose or maltodextrin showed higher energy levels than the ones that were given just the sweetener. The same people that took the glucose or maltodexin also showed higher pulse rates and higher average power output, but they didn’t feel they worked any harder. With this study it showed that unknown receptors in the mouth spate from sweet taste buds are probably responsible. Maltodextrin triggers something in the brain rather than directly to working muscles which tends to make the person work harder. According to the study, it’s not the not the organs (heart, lungs, muscles) that limit the performance, its how the body receives information form the brain. Surgery drinks, weather it contains glucose or maltodextrin, both boost the athletes over all performance.
-Attyah . J.
Other source: http://www.sciencedaily.com/releases/2008/12/081223193108.htm
http://www.sciencedaily.com/releases/2009/02/090205174548.htm
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