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Re: No one knows what purposes, if any, dreams serve, although [#permalink]
 16 Jun 2012, 09:45
I had selected B. Can someoned plz elaborate why C is not extreme as "the functioning of its memory will be impaired." seems to be too strong
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Re: No one knows what purposes, if any, dreams serve, although [#permalink]
21 Jan 2013, 11:17
priyankur_saha@ml.com wrote: No one knows what purposes, if any, dreams serve, although there are a number of hypotheses. According to one hypothesis, dreams are produced when the brain is erasing “parasitic connections” (meaningless, accidental associations between ideas), which accumulate during the day and which would otherwise clog up our memories. Interestingly, the only mammal that does not have rapid eye movement sleep, in which we humans typically have our most vivid dreams, is the spiny anteater, which has been seen as anomalous in that it has a very large brain relative to the animal’s size. This fact provides some confirmation for the parasitic-connection hypothesis, since the hypothesis predicts that for an animal that did not dream to have an effective memory that animal would need extra memory space for the parasitic connections. The parasitic-connection hypothesis, if true, most strongly supports which one of the following? (A) The animals with the smallest brains spend the most time sleeping. This is irrelevant because it doesn't matter how much sleeping is done by the animal, what matters is how much dreaming is done since dreaming is where the "parasitic connections" are supposedly being erased.
(B) Immediately after a person awakens from normal sleep, her or his memory contains virtually no accidental associations between ideas. This very lightly supports the hypothesis; however, it is dreaming that erases the connections, not sleeping.(C) When a mammal that would normally dream is prevented from dreaming, the functioning of its memory will be impaired. BAM! As Emeri would say. C is the answer. Since the parasitic connections are erased during dreaming, if we removed the dreaming aspect from sleep it would be expected that there would be some repercussion to memory caused by the parasitic connections.(D) Insofar as a person’s description of a dream involves meaningful associations between ideas, it is an inaccurate description. The last time I heard this was in a hippie drum circle... Completely irrelevant.(E) All animals other than the spiny anteater dream. This would be a contradiction to the statement above and would also suggest that dreaming does not erase the parasitic connections since they are unlikely exist in other animals (if the paragraph above is believed).
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Re: No one knows what purposes, if any, dreams serve, although [#permalink]
26 Jan 2013, 00:25
Choice C is correct. A) Not Relevant B) This choice is too extreme. There is no support in the passage to assume that during sleep brain clears all the accidental associations between ideas and that the memory does not have any accidental associations after awakening. C) This choice seems working. If a mammal prevented from dreaming its memory will clog-up with accidental associations or such non important things and would not be able to effectively store new data.D) Incorrect. There never has mentioned that dream involves meaningful associations between ideas. E) This choice might be tempting however we should note that to conclude all animal othe than the spiny anteater dream we need to establish that if any animal has a rapid eye movement so in that case it must be dreaming. However there is no support from the passage to assume this. so this can not be concluded. Experts should comment on the questions difficulty level. I think this can not be the 500 level question.
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Re: No one knows what purposes, if any, dreams serve, although
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26 Jan 2013, 00:25
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