Mario's Response to Chris

Mario's Response to Chris - Christopher Ross WRA 110,...

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Christopher Ross WRA 110, Section 742 RA rough draft October 11, 2011 The Brain's (Dark Energy) Marcus Raichle's article, "The Brain's (Dark Energy)", published by Scientific American in 2010, uses recent analysis of neuroimaging technologies to reveal more about the human mind's key to consciousness than scientists had previously known before. Researchers have used the images produced to disprove the assumption that, "the (neural) activity in the resting brain represents nothing more than random noise."(Raichle) In fact, most things that we do consciously are the result of synapses, electrical signals, coming from the brain's default mode network or DMN. Raichle describes that the downtime, referred to as the brain's "Dark Energy", is also displayed in the slow cortical potentials ("SCP's ensure that the right computations occur in a coordinated fashion at exactly the correct moment."). Research of the DMN has shown that it is the master organizer of the brain and more importantly "Brain-imaging studies have found connections among brain cells in the DMN regions of patients with."(Raichle) In this article the author uses several different rhetorical methods in order to appeal to his audience of the scientific and scholarly community. Among the strategies used are pathos (emotional appeal), logos (rationality appeal), and organization of the information to educate and relate the reader to the material. Raichle consistently use real life metaphors to draw away from the scientific appeal and focus on pathos or the emotional appeal. This can be seen when he states that, "The DMN may play a critical role in synchronizing all parts of the brain so that, like racers in a track competition, they are all in the proper "set" mode when the starting gun goes off." This method keeps the reader's attention while giving the text more meaning in the grand scheme of things. Another example of the pathos is when the electrical signaling of the DMN is related to the conductor that instead of keeping time coordinates the competing signals from differing brain areas. The real life metaphors help to emotionally build on the idea that the brain is a union of interdependent systems rather than a free-for-all. This article most often displays a logical, scientific approach to construct its authenticity. This can be seen when Raichle establishes Hans Berger as an inventor of a device that records electrical activity and then quotes him saying that the nervous system is never at rest. The author is trying to provide adequate evidence supporting his thesis as well as giving himself credibility. Raichle also mentions that the work Michael Greicius and his co-workers at Stanford
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This note was uploaded on 02/15/2012 for the course WRA 110 taught by Professor Don'tremember during the Fall '05 term at Michigan State University.

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Mario's Response to Chris - Christopher Ross WRA 110,...

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