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
The decrease in responsiveness that follows continuous stimulation (adaptation) is common to all sensory systems, including olfa
The decrease in responsiveness that follows continuous stimulation (adaptation) is common to all sensory systems, including olfa
admin
2018-07-04
27
问题
The decrease in responsiveness that follows continuous stimulation (adaptation) is common to all sensory systems, including olfaction. With continued exposure to chronically present ambient odors, individuals’ perception of odor intensity is greatly reduced. Moreover, these perceptual changes can be profound and durable. It is commonly reported that following extended absences from the odorous environment, reexposure may still fail to elicit perception at the original intensity.
Most research on olfactory adaptation examines relatively transient changes in stimulus detection or perceived intensity—rarely exceeding several hours and often less—but because olfactory adaptation can be produced with relatively short exposures, these durations are sufficient for investigating many parameters of the phenomenon. However, exposures to odors in natural environments often occur over far longer periods, and the resulting adaptations may differ qualitatively from short-term olfactory adaptation. For example, studies show that even brief periods of odorant stimulation produce transient reductions in receptors in the olfactory epithelium, a process termed “receptor fatigue.” Prolonged odor stimulation, however, could produce more long-lasting reductions in response, possibly involving structures higher in the central nervous system pathway.
The passage asserts which of the following about the exposures involved in the “research on olfactory adaptation”?
选项
A、The exposures are of long enough duration for researchers to investigate many aspects of olfactory adaptation.
B、The exposures have rarely consisted of reexposures following extended absences from the odorous environment.
C、The exposures are intended to reproduce the relatively transient olfactory changes typical of exposures to odors in natural environments.
D、Those exposures of relatively short duration are often insufficient to produce the phenomenon of receptor fatigue in study subjects.
E、Those exposures lasting several hours produce reductions in receptors in the olfactory epithelium that are similar to the reductions caused by prolonged odor stimulation.
答案
A
解析
本题定位到第二段第一句,这些研究者认为短期的刺激足够用来研究嗅觉适应性的很多参数。A选项同义改写原文,正确。
转载请注明原文地址:https://kaotiyun.com/show/ndjO777K
本试题收录于:
GRE VERBAL题库GRE分类
0
GRE VERBAL
GRE
相关试题推荐
Myfaithinhumannaturehasneverbeensogreatasitwaslastweekendafterourfamilyget-togetherinthetownofVail.O
Myfaithinhumannaturehasneverbeensogreatasitwaslastweekendafterourfamilyget-togetherinthetownofVail.O
Inmyculture,itisnotacceptedornormaltogoagainstparents’wishes.IbelongtoasmallandnativecommunityintheOaxac
Thesizeofaflat-screentelevisionisgivenasthelengthofthescreen’sdiagonal.Howmanysquareinchesgreateristhescre
Itcanbeinferredfromthepassagethataccidental-deathdamageawardsinAmericaduringthenineteenthcenturytendedtobeba
Thefunctionofcapitalmarketsistofacilitateanexchangeoffundsamongallparticipants,andyetinpracticewefindthatce
Coralreefsareoneofthemostfragile,biologicallycomplex,anddiversemarineecosystemonEarth.Thisecosystemisoneoft
Toughenedhiringstandardshavenotbeentheprimarycauseofthepresentstaffingshortageinpublicschools.Theshortageoft
Mostdiscussionsofthefactorscontributingtoimprovementsinpublichealthgreatlyunderestimatetheinfluenceofthevalues
Fromthebeginning,theideaofafiniteuniverseranintoitsownobstacle,theapparentneedforanedge,aproblemthat
随机试题
在德育过程中,人们为了达到某种目的而产生的自觉能动性,一般称为()
简化汉字采用了哪些方法?举例说明。
讯问笔录中记载着犯罪嫌疑人的陈述和辩解,一经查实,就是()
下列各匐中属于意动用法的是()
在计算机中,一个存储单元能存放一个字节,则容量为32KB的存储器中的存储单元个数为()
A生理性多尿B病理性多尿C肾前性少尿D肾性少尿E肾后性少尿尿崩症致多尿为
某承包商与客户签订一项建造合同,为客户紧急修建一条2千米的抢险公路,承包商的成本开支实报实销,另有5%的酬金。则该项合同是()。
“备案号”栏应填()。“运输工具名称”栏应填()。
老张因沉溺于股市,从而无法参加正常的社会活动,社会工作者判定他的行为属于异常行为,他的判定标准是()。
下列关于建立覆盖城乡居民的社会保障体系的说法中,错误的是()。
最新回复
(
0
)