Structure of the Brain
Research has suggested that the brai
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Research has suggested that the brain, which has a symmetrical structure, may have different functions on different sides of that structure, with the degree of development of one hemisphere over the other indicating differences in cognitive ability, behavior patterns, and other dimensions of mental functioning. Scientists believe that nature "intends" for certain structures and behaviors to be symmetrical, and the issue then arises as to why they do not develop in precisely that fashion. The structures of the brain are symmetrical in appearance, but they are asymmetrical in functioning. A recent article in the British magazine The Economist analyzes this issue, the issue of what is called fluctuating asymmetry, in an attempt to show how these fluctuations may be related to broader environmental issues. To this end, the article considers the issues of symmetry and asymmetry, why symmetry is important, and how researchers have tried to explain the differences that have been perceived. Research articles on the same subject throw light on the matter of symmetry and the reason for asymmetry in nature.Research on the brain has addressed the brain's right and left hemispheres, which look the same but which are asymmetrical in function. This means that the brain is lateralized, or performs different tasks with its two sides. Human beings need both sides of the brain for optimal performance, and thus each cerebral hemisphere and brain area must contribute its ow
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t weaken the adult. A more controversial reason is that a preference for symmetry in the body could develop as a consequence of brian structure. This latter concept has come about because of a phenomenon called "sensory bias," occurring when a reasonable preference in one context shapes perceptions so as to cause a seemingly pointless preference in another. The fact that a bird may like red fruit can produce a sensory bias manifested in a preference for red mates, for instance.
The reason for this article is to report on a study in the journal Nature indicating that there might be a sensory bias towards symmetry as a by-product of neural structure. This study was conducted by Rufus Johnstone of Cambridge University, who trained a neural network, a computer designed to mimic the learning pattern of a human brain, to choose a set of five pictures of varying symmetry from groups of random pictures. In this process, the network unexpectedly developed a preference for the most symmetrical of the five images in each case, and this may mean that symmetrical archetypes grow out of the efforts of the brain to make sense of a world where symmetries are hidden beneath fluctuating asymmetries.
The article points out that not all resear
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Some common words found in the essay are:
INTRODUCTION Research, FAs Johnstone, University Mexico, Grammer Thornhill, RESEARCH ARTICLES, ANALYSIS CONCLUSION, ISSUE ARTICLE, Cambridge University, University Copenhagen, Johnstone RA, fluctuating asymmetry, preference symmetrical, tail patterns, facial symmetry, average training, sensory bias, mate recognition, symmetrical tail, preference symmetry, female preference symmetrical, low levels, preferences low levels, average training stimuli, prefer averageness symmetry, preference symmetrical tail,
Approximate Word count = 1956
Approximate Pages = 8 (250 words per page)
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