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
医学
In patients with Huntington’ s disease, it’ s the part of the brain called the basal ganglia that’ s destroyed. While these vict
In patients with Huntington’ s disease, it’ s the part of the brain called the basal ganglia that’ s destroyed. While these vict
admin
2013-11-30
39
问题
In patients with Huntington’ s disease, it’ s the part of the brain called the basal ganglia that’ s destroyed. While these victims have perfectly intact explicit memory systems, they can’t learn new motor skills. An Alzheimer’ s patient can learn to draw in a mirror but can’ t remember doing it: a Huntington’ s patient can’ t do it but can remember trying to learn. Yet another region of the brain, an almond-size knot of neural tissue seems to be crucial in forming and triggering the recall of a special subclass of memories that is tied to strong emotion, especially fear. These are just some of the major divisions. Within the category of implicit memory, for example, lie the subcategories of associative memory—the phenomenon that famously led Parlov’ s dogs to salivate at the sound of a bell which they had learned to associate with food and of habituation, in which we unconsciously file a-way unchanging features of the environment so we can pay closer attention to what’ s new and different upon encountering a new experience.
Within explicit, or declarative memory, on the other hand, there are specific subsystems that handle shapes, textures such as faces, names—even distinct systems to remember nouns vs. verbs. All of these different types of memory are ultimately stored in the brain’ s cortex, within its deeply furrowed outer layer—a component of the brain dauntingly more complex than comparable parts in other species. Experts in brain imaging are only beginning to understand what goes where, and how the parts are reassembled into a coherent whole that seems to be a single memory is actually a complex construction. Think of a hammer, and your brain hurriedly retrieves the tool’ s name, its appearance , its function, its heft and the sound of its clang, each extracted from a different region of the brain. Fail to connect person’ s name with his or her face, and you experience the breakdown of that assembly process that many of us begin to experience in our 20s and that becomes downright worrisome when we reach our 50 s.
It was this weakening of memory and the parallel loss of ability to learn new things easily that led biologist Joe Tsien to the experiments reported last week. " This age-dependent loss of function. " he says, "appears in many animals, and it begins with the onset of sexual maturity. "
What’ s happening when the brain forms memories—and what fails with aging, injury and disease—involves a phenomenon known as "plasticity". It’ s obvious that something in the brain changes as we learn and remember new things, but it’ s equally obvious that the organ doesn’ t change its overall structure or grow new nerve cells wholesale. Instead, it’ s the connections between new cells—and particularly the strength of these connections that are altered by experience. Hear a word over and over, and the repeated firing of certain cells in a certain order makes it easier to repeat the firing pattern later on. It is the pattern that represents each specific memory.
According to the passage, which of the following memories has nothing to do with implicit memory?
选项
A、Associating a signal with an action.
B、Recognizing of new features.
C、Focusing on new environment.
D、Remembering a familiar face of a friend.
答案
D
解析
根据第二段Within explicit,or declarative memory,there are…shapes,textures such asfaces,names….可以判断remembering a familiar face of a friend属于explicit memory范畴。
转载请注明原文地址:https://kaotiyun.com/show/ADU3777K
本试题收录于:
医学博士外语题库考研分类
0
医学博士外语
考研
相关试题推荐
A、Thebuyingoflifeinsuranceisnotthebusinessofguessing.B、Theremustbeastandardamountoflifeinsuranceforpeople.
Expertscautionthatnomatterwhichmethodpatientschoose,theymayneedtoweareyeglassesagainoneday—atleastforreadin
Ifyouarecaughtinadownpour,itisbettertorunforshelterthanwalk,researchersintheUSadvise.Thismaysoundobvious
A、Thesubjectswereaskedtowriteoftheirfreewill.B、Thesubjectswereaskedtowriteinasystematicway.C、Thesubjectswe
AboywhostrugglestoreadEnglishprimary-schoolstorybooksyethasnotroublewithuniversityphysicstextbooksinJapanesei
Thegovernmentalways______onthebackgroundofemployeeswhoarehiredforsensitivemilitaryprojects.
Mr.Green’ssorearmisnotanewdevelopmentbutthereturnofachronicailment.
ShetoldusthattheleasewouldterminateinMay,andshehadtofindanewhouse.
Untilafewyearsagomostexpertsbelievedthatyoungchildrencouldn’tlie.ThelatedevelopmentalpsychologistJeanPiagetbe
A、Skincancer.B、Lungcancer.C、BreastCancer.D、Livercancer.D“Heavydrinkingcanincreasetheriskforcertaincancers,especi
随机试题
简述公共政策变动的原因。
电子产品的遥控器出现控制距离缩短,角度偏小时,通常可能是()
A.DNA错配修复系统的基因发生突变B.DNA链上产生胸腺嘧啶二聚体C.两者皆有D.两者皆无人类遗传性非息肉性结肠直肠癌(HPCC)的病因是
正常腹部可触到哪些包块
会计软件是专门用于会计核算、财务管理的计算机软件、软件系统或者其他功能模块。()
地陪李先生陪同一个内宾团在H市旅游。期间恰逢当地举办民俗庙会,十分热闹。在离开H市的前一天上午,游客M女士在观看民俗歌舞表演时突然发现手袋不见了,手袋里有她的身份证,而第二天离站时安排的交通方式是乘飞机离开。M女士慌慌张张地找到李先生告知此事,请求帮助。
《唐睢不辱使命》原文秦王使人谓安陵君曰:“寡人欲以五百里之地易安陵,安陵君其许寡人!”安陵君曰:“大王加惠,以大易小,甚善;虽然,受地于先王,愿终守之,弗敢易!”秦王不说。安陵君因使唐雎使于秦。秦王谓唐雎曰:“寡人以五百里之地易安陵,安
根据以下资料,回答116~120题2004年云南省规模以上工业增加值中重工业占的比重是多少?()
夜晚点燃艾叶驱蚊曾是龙泉山区引起家庭火灾的重要原因。近年来,尽管使用艾叶驱蚊的人家显著减少。但是,家庭火灾所导致的死亡人数并没有呈现减少的趋势。以下各项如果为真,能够解释上述情况,除了:
在考生文件夹下,打开文档Word.docx,按照要求完成下列操作并以该文件名Word.docx保存文档。将文中最后4行文字转换成一个4行3列的表格;在第2列与第3列之间添加一列,并依次输入该列内容“缓冲器”、“4"、“40”、“80”;设置表格列宽为2
最新回复
(
0
)