首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
By 1950. the results of attempts to relate brain processes to mental experience appeared rather discouraging. Such variations in
By 1950. the results of attempts to relate brain processes to mental experience appeared rather discouraging. Such variations in
admin
2010-03-19
61
问题
By 1950. the results of attempts to relate brain processes to mental experience appeared rather discouraging. Such variations in size, shape, chemistry, conduction speed, excitation threshold, and the like as had been demonstrated in nerve cells remained negligible in significance for any possible correlation with the manifold dimensions of mental experience.
Near the turn of the century, it had been suggested by Hering that different modes of sensation, such as pain, taste, and color, might be correlated with the discharge of specific kinds of nervous energy. However, subsequently developed methods of recording and analyzing nerve potentials failed to reveal any such qualitative diversity. It was possible to demonstrate by other methods refined structural differences among neuron types: however, proof was lacking that the quality of the impulse or its conduction was influenced by these differences, which seemed instead to influence the developmental patterning of the neural circuits. Although qualitative variance among nerve energies was never rigidly disproved, the doctrine was generally abandoned in favor of the opposing view, namely, that nerve impulses were essentially homogeneous in quality and were transmitted as "common currency" throughout the nervous system. According to his theory, it is not the quality of the sensory nerve impulses that determines the diverse conscious sensations they produce, but rather the different areas of the brain into which they discharge, and there is some evidence for this view. In one experiment, when an electric stimulus was applied to a given sensory field of the cerebral cortex of a conscious human subject, it produced a sensation of the appropriate modality for that particular locus, that is, a visual sensation from the visual cortex, an auditory sensation from the auditory cortex, and so on. Other experiments revealed slight variations in the size, number, arrangement, and interconnection of the nerve cells, but as far as psychoneural correlations were concerned, the obvious similarities of these sensory fields to each other seemed much more remarkable than any of the minute differences.
However, cortical locus, in itself, turned out to have little explanatory value. Studies showed that sensations as diverse as those of red, black, green, and white, or touch, cold, warmth, movement, pain, cortical areas. What seemed to remain was some kind of differential patterning effects in the brain excitation: it is the difference in the central distribution of impulses that counts. In short, brain theory suggested a correlation between mental experience and the activity of relatively homogeneous nerve cell units conducting essentially homogeneous impulses through homogeneous cerebral tissue. To match the multiple dimensions of mental experience psychologists could only point to a limitless variation in the spatiotemporal patterning of nerve impulses.
From paragraph 1 we can learn that by 1950, ______.
选项
A、scientists have reached a consensus on the relationship between brain processes and mental experience
B、variations in nerve cells are proved to be significantly correlated with mental experience
C、attempts to correlate mental experience with brain processes have been viewed with pessimism
D、scientists are indifferent to the manifold dimensions of mental experience
答案
C
解析
细节理解题。文章开头说到1950年,试图将大脑运动过程与精神经验联系到一起的研究结果相当令人泄气,所以C项符合文意。
转载请注明原文地址:https://kaotiyun.com/show/H59K777K
0
专业英语四级
相关试题推荐
Ihadbeenpuzzledovertheproblemforoveranhourwithoutanyresultwhenallatoncethesolution______acrossmymind.
Thegreatestrecentsocialchangeshavebeen【C1】______thelivesofwomen.Duringthe20thcenturytherehasbeenaremarkable
Amongthe50members,40voted,and______abstained.
Manystudentsfindtheexperienceofattendinguniversitylecturestobeaconfusingandfrustratingexperience.Thelecturersp
Manystudentsfindtheexperienceofattendinguniversitylecturestobeaconfusingandfrustratingexperience.Thelecturersp
Hecastbuta______glanceuponthesinglesoliderthatstoodguard.
WhichofthefollowingadverbscanNOTbeusedtocomplete"______everybodycame"?
I’mafraidthecoffeeIspiltwillmakea______onthetablecloth.
CoffeeCoffeeprobablyderivesitsnamefromtheArabic"gahwah",althoughsomeetymologistsconnectitwiththenameKaffa,
Everybodyshouldtake______oftheseriousnessofthismatter.
随机试题
某基地上布置一幢多层民用建筑(图6-1),按防火要求,下列说法中哪项正确?[2000-14]
下列哪种观点不符合爆炸和火灾危险环境的电力装置设计的有关规定?()
电力变压器运行时,下列哪项故障及异常情况应瞬时跳闸?()
工程项目管理的特点包括()。
2014年3月10日,为适应业务发展的需要,经与乙公司协商,甲公司决定以生产经营过程中使用的办公楼、机器设备和库存商品换入乙公司生产经营过程中使用的20辆货运车和30辆客运汽车。甲公司办公楼的账面原价为450万元,在交换日已计提的累计折旧为90万元,公允价
Risingwages—togetherwithcurrencyfluctuationsandhighfuelcosts—areeatingawaytheonce-formidable"Chinaprice"advan
设f(lnx)==________.
设离散型随机变量X的分布函数则随机变量|X|的分布函数为________.
Publicisinghisimminentnewseriesabouttheevolutionofanimals,SirDavidAttenboroughsaidthisweekthathethoughtaredu
Formuchofitshistory,innumerableepigramshavebeencoinedaboutLondonbybothherenthusiastsanddetractors.Thegreat18
最新回复
(
0
)