Questõesde UECE sobre Vocabulário | Vocabulary

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e9e58efe-b8
UECE 2013 - Inglês - Aspectos linguísticos | Linguistic aspects, Vocabulário | Vocabulary, Interpretação de texto | Reading comprehension

The expression “Not just on the court, but in the streets as well” can be correctly rewritten as

TEXT

     BRASÍLIA — Brazil’s highest court has long viewed itself as a bastion of manners and formality. Justices call one another “Your Excellency,” dress in billowing robes and wrap each utterance in grandiloquence, as if little had changed from the era when marquises and dukes held sway from their vast plantations.
     In one televised feud, Mr. Barbosa questioned another justice about whether he would even be on the court had he not been appointed by his cousin, a former president impeached in 1992. With another justice, Mr. Barbosa rebuked him over what the chief justice considered his condescending tone, telling him he was not his “capanga,” a term describing a hired thug. 
      In one of his most scathing comments, Mr. Barbosa, the high court’s first and only black justice, took on the entire legal system of Brazil — where it is still remarkably rare for politicians to ever spend time in prison, even after being convicted of crimes — contending that the mentality of judges was “conservative, pro-status-quo and pro-impunity.”
     “I have a temperament that doesn’t adapt well to politics,” Mr. Barbosa, 58, said in a recent interview in his quarters here in the Supreme Federal Tribunal, a modernist landmark designed by the architect Oscar Niemeyer. “It’s because I speak my mind so much.” 
     His acknowledged lack of tact notwithstanding, he is the driving force behind a series of socially liberal and establishment-shaking rulings, turning Brazil’s highest court — and him in particular — into a newfound political power and the subject of popular fascination. 
   The court’s recent rulings include a unanimous decision upholding the University of Brasília’s admissions policies aimed at increasing the number of black and indigenous students, opening the way for one of the Western Hemisphere’s most sweeping affirmative action laws for higher education. 
     In another move, Mr. Barbosa used his sway as chief justice and president of the panel overseeing Brazil’s judiciary to effectively legalize same-sex marriage across the country. And in an anticorruption crusade, he is overseeing the precedent-setting trial of senior political figures in the governing Workers Party for their roles in a vast vote-buying scheme.
   Ascending to Brazil’s high court, much less pushing the institution to assert its independence, long seemed out of reach for Mr. Barbosa, the eldest of eight children raised in Paracatu, an impoverished city in Minas Gerais State, where his father worked as a bricklayer.  
    But his prominence — not just on the court, but in the streets as well — is so well established that masks with his face were sold for Carnival, amateur musicians have composed songs about his handling of the corruption trial and posted them on YouTube, and demonstrators during the huge street protests that shook the nation this year told pollsters that Mr. Barbosa was one of their top choices for president in next year’s elections.
     While the protests have subsided since their height in June, the political tumult they set off persists. The race for president, once considered a shoo-in for the incumbent, Dilma Rousseff, is now up in the air, with Mr. Barbosa — who is now so much in the public eye that gossip columnists are following his romance with a woman in her 20s — repeatedly saying he will not run. “I’m not a candidate for anything,” he says. 
     But the same public glare that has turned him into a celebrity has singed him as well. While he has won widespread admiration for his guidance of the high court, Mr. Barbosa, like almost every other prominent political figure in Brazil, has recently come under scrutiny. And for someone accustomed to criticizing the so-called supersalaries awarded to some members of Brazil’s legal system, the revelations have put Mr. Barbosa on the defensive. 
     One report in the Brazilian news media described how he received about $180,000 in payments for untaken leaves of absence during his 19 years as a public prosecutor. (Such payments are common in some areas of Brazil’s large public bureaucracy.) Another noted that he bought an apartment in Miami through a limited liability company, suggesting an effort to pay less taxes on the property. In statements, Mr. Barbosa contends that he has done nothing wrong. 
     In a country where a majority of people now define themselves as black or of mixed race — but where blacks remain remarkably rare in the highest echelons of political institutions and corporations — Mr. Barbosa’s trajectory and abrupt manner have elicited both widespread admiration and a fair amount of resistance. 
     As a teenager, Mr. Barbosa moved to the capital, Brasília, finding work as a janitor in a courtroom. Against the odds, he got into the University of Brasília, the only black student in its law program at the time. Wanting to see the world, he later won admission into Brazil’s diplomatic service, which promptly sent him to Helsinki, the Finnish capital on the shore of the Baltic Sea. 
     Sensing that he would not advance much in the diplomatic service, which he has called “one of the most discriminatory institutions of Brazil,” Mr. Barbosa opted for a career as a prosecutor. He alternated between legal investigations in Brazil and studies abroad, gaining fluency in English, French and German, and earning a doctorate in law at Pantheon-Assas University in Paris. 
   Fascinated by the legal systems of other countries, Mr. Barbosa wrote a book on affirmative action in the United States. He still voices his admiration for figures like Thurgood Marshall, the first black Supreme Court justice in the United States, and William J. Brennan Jr., who for years embodied the court’s liberal vision, clearly drawing inspiration from them as he pushed Brazil’s high court toward socially liberal rulings.
    Still, no decision has thrust Mr. Barbosa into Brazil’s public imagination as much as his handling of the trial of political operatives, legislators and bankers found guilty in a labyrinthine corruption scandal called the mensalão, or big monthly allowance, after the regular payments made to lawmakers in exchange for their votes. 
    Last November, at Mr. Barbosa’s urging, the high court sentenced some of the most powerful figures in the governing Workers Party to years in prison for their crimes in the scheme, including bribery and unlawful conspiracy, jolting a political system in which impunity for politicians has been the norm.  
     Now the mensalão trial is entering what could be its final phases, and Mr. Barbosa has at times been visibly exasperated that defendants who have already been found guilty and sentenced have managed to avoid hard jail time. He has clashed with other justices over their consideration of a rare legal procedure in which appeals over close votes at the high court are examined. 
     Losing his patience with one prominent justice, Ricardo Lewandowski, who tried to absolve some defendants of certain crimes, Mr. Barbosa publicly accused him this month of “chicanery” by using legalese to prop up certain positions. An outcry ensued among some who could not stomach Mr. Barbosa’s talking to a fellow justice like that. “Who does Justice Joaquim Barbosa think he is?” asked Ricardo Noblat, a columnist for the newspaper O Globo, questioning whether Mr. Barbosa was qualified to preside over the court. “What powers does he think he has just because he’s sitting in the chair of the chief justice of the Supreme Federal Tribunal?” 
      Mr. Barbosa did not apologize. In the interview, he said some tension was necessary for the court to function properly. “It was always like this,” he said, contending that arguments are now just easier to see because the court’s proceedings are televised. 
     Linking the court’s work to the recent wave of protests, he explained that he strongly disagreed with the violence of some demonstrators, but he also said he believed that the street movements were “a sign of democracy’s exuberance.” 
     “People don’t want to passively stand by and observe these arrangements of the elite, which were always the Brazilian tradition,” he said. 
A
not just on the court, but so in the streets.
B
not only on the court, but also in the streets.
C
not just on the court, too in the streets.
D
not only on the court, but too in the streets.
f3479fa0-b8
UECE 2012 - Inglês - Vocabulário | Vocabulary, Sinônimos | Synonyms, Interpretação de texto | Reading comprehension

As to the meaning of the words “stemmed”, “tussle”, “gaze”, and “onset” in the text, it is expressed respectively in

T E X T 

    SPEAKING two languages rather than just one has obvious practical benefits in an increasingly globalized world. But in recent years, scientists have begun to show that the advantages of bilingualism are even more fundamental than being able to converse with a wider range of people. Being bilingual, it turns out, makes you smarter. It can have a profound effect on your brain, improving cognitive skills not related to language and even shielding against dementia in old age. 

     This view of bilingualism is remarkably different from the understanding of bilingualism through much of the 20th century. Researchers, educators and policy makers long considered a second language to be an interference, cognitively speaking, that hindered a child’s academic and intellectual development. 
    They were not wrong about the interference: there is ample evidence that in a bilingual’s brain both language systems are active even when he is using only one language, thus creating situations in which one system obstructs the other. But this interference, researchers are finding out, isn’t so much a handicap as a blessing in disguise. It forces the brain to resolve internal conflict, giving the mind a workout that strengthens its cognitive muscles. 
    Bilinguals, for instance, seem to be more adept than monolinguals at solving certain kinds of mental puzzles. In a 2004 study by the psychologists Ellen Bialystok and Michelle MartinRhee, bilingual and monolingual preschoolers were asked to sort blue circles and red squares presented on a computer screen into two digital bins — one marked with a blue square and the other marked with a red circle. 
    In the first task, the children had to sort the shapes by color, placing blue circles in the bin marked with the blue square and red squares in the bin marked with the red circle. Both groups did this with comparable ease. Next, the children were asked to sort by shape, which was more challenging because it required placing the images in a bin marked with a conflicting color. The bilinguals were quicker at performing this task. 
    The collective evidence from a number of such studies suggests that the bilingual experience improves the brain’s so-called executive function — a command system that directs the attention processes that we use for planning, solving problems and performing various other mentally demanding tasks. These processes include ignoring distractions to stay focused, switching attention willfully from one thing to another and holding information in mind — like remembering a sequence of directions while driving.
    Why does the tussle between two simultaneously active language systems improve these aspects of cognition? Until recently, researchers thought the bilingual advantage stemmed primarily from an ability for inhibition that was honed by the exercise of suppressing one language system: this suppression, it was thought, would help train the bilingual mind to ignore distractions in other contexts. But that explanation increasingly appears to be inadequate, since studies have shown that bilinguals perform better than monolinguals even at tasks that do not require inhibition, like threading a line through an ascending series of numbers scattered randomly on a page.
    The key difference between bilinguals and monolinguals may be more basic: a heightened ability to monitor the environment. “Bilinguals have to switch languages quite often — you may talk to your father in one language and to your mother in another language,” says Albert Costa, a researcher at the University of PompeuFabra in Spain. “It requires keeping track of changes around you in the same way that we monitor our surroundings when driving.” In a study comparing German-Italian bilinguals with Italian monolinguals on monitoring tasks, Mr. Costa and his colleagues found that the bilingual subjects not only performed better, but they also did so with less activity in parts of the brain involved in monitoring, indicating that they were more efficient at it. 
    The bilingual experience appears to influence the brain from infancy to old age (and there is reason to believe that it may also apply to those who learn a second language later in life). 
    In a 2009 study led by Agnes Kovacs of the International School for Advanced Studies in Trieste, Italy, 7-month-old babies exposed to two languages from birth were compared with peers raised with one language. In an initial set of trials, the infants were presented with an audio cue and then shown a puppet on one side of a screen. Both infant groups learned to look at that side of the screen in anticipation of the puppet. But in a later set of trials, when the puppet began appearing on the opposite side of the screen, the babies exposed to a bilingual environment quickly learned to switch their anticipatory gaze in the new direction while the other babies did not. 
    Bilingualism’s effects also extend into the twilight years. In a recent study of 44 elderly Spanish-English bilinguals, scientists led by the neuropsychologist Tamar Gollan of the University of California, San Diego, found that individuals with a higher degree of bilingualism — measured through a comparative evaluation of proficiency in each language — were more resistant than others to the onset of dementia and other symptoms of Alzheimer’s disease: the higher the degree of bilingualism, the later the age of onset.
    Nobody ever doubted the power of language. But who would have imagined that the words we hear and the sentences we speak might be leaving such a deep imprint? 

Source: www.nytimes.com
A
damage, defend, wonder, assault.
B
originated, struggle, look, beginning.
C
assault, threat, look, end.
D
defend, wonder, snatch, decline.
f343fc04-b8
UECE 2012 - Inglês - Vocabulário | Vocabulary, Sinônimos | Synonyms

An example of a pair of words/terms that appear in the text with similar meaning is

T E X T 

    SPEAKING two languages rather than just one has obvious practical benefits in an increasingly globalized world. But in recent years, scientists have begun to show that the advantages of bilingualism are even more fundamental than being able to converse with a wider range of people. Being bilingual, it turns out, makes you smarter. It can have a profound effect on your brain, improving cognitive skills not related to language and even shielding against dementia in old age. 

     This view of bilingualism is remarkably different from the understanding of bilingualism through much of the 20th century. Researchers, educators and policy makers long considered a second language to be an interference, cognitively speaking, that hindered a child’s academic and intellectual development. 
    They were not wrong about the interference: there is ample evidence that in a bilingual’s brain both language systems are active even when he is using only one language, thus creating situations in which one system obstructs the other. But this interference, researchers are finding out, isn’t so much a handicap as a blessing in disguise. It forces the brain to resolve internal conflict, giving the mind a workout that strengthens its cognitive muscles. 
    Bilinguals, for instance, seem to be more adept than monolinguals at solving certain kinds of mental puzzles. In a 2004 study by the psychologists Ellen Bialystok and Michelle MartinRhee, bilingual and monolingual preschoolers were asked to sort blue circles and red squares presented on a computer screen into two digital bins — one marked with a blue square and the other marked with a red circle. 
    In the first task, the children had to sort the shapes by color, placing blue circles in the bin marked with the blue square and red squares in the bin marked with the red circle. Both groups did this with comparable ease. Next, the children were asked to sort by shape, which was more challenging because it required placing the images in a bin marked with a conflicting color. The bilinguals were quicker at performing this task. 
    The collective evidence from a number of such studies suggests that the bilingual experience improves the brain’s so-called executive function — a command system that directs the attention processes that we use for planning, solving problems and performing various other mentally demanding tasks. These processes include ignoring distractions to stay focused, switching attention willfully from one thing to another and holding information in mind — like remembering a sequence of directions while driving.
    Why does the tussle between two simultaneously active language systems improve these aspects of cognition? Until recently, researchers thought the bilingual advantage stemmed primarily from an ability for inhibition that was honed by the exercise of suppressing one language system: this suppression, it was thought, would help train the bilingual mind to ignore distractions in other contexts. But that explanation increasingly appears to be inadequate, since studies have shown that bilinguals perform better than monolinguals even at tasks that do not require inhibition, like threading a line through an ascending series of numbers scattered randomly on a page.
    The key difference between bilinguals and monolinguals may be more basic: a heightened ability to monitor the environment. “Bilinguals have to switch languages quite often — you may talk to your father in one language and to your mother in another language,” says Albert Costa, a researcher at the University of PompeuFabra in Spain. “It requires keeping track of changes around you in the same way that we monitor our surroundings when driving.” In a study comparing German-Italian bilinguals with Italian monolinguals on monitoring tasks, Mr. Costa and his colleagues found that the bilingual subjects not only performed better, but they also did so with less activity in parts of the brain involved in monitoring, indicating that they were more efficient at it. 
    The bilingual experience appears to influence the brain from infancy to old age (and there is reason to believe that it may also apply to those who learn a second language later in life). 
    In a 2009 study led by Agnes Kovacs of the International School for Advanced Studies in Trieste, Italy, 7-month-old babies exposed to two languages from birth were compared with peers raised with one language. In an initial set of trials, the infants were presented with an audio cue and then shown a puppet on one side of a screen. Both infant groups learned to look at that side of the screen in anticipation of the puppet. But in a later set of trials, when the puppet began appearing on the opposite side of the screen, the babies exposed to a bilingual environment quickly learned to switch their anticipatory gaze in the new direction while the other babies did not. 
    Bilingualism’s effects also extend into the twilight years. In a recent study of 44 elderly Spanish-English bilinguals, scientists led by the neuropsychologist Tamar Gollan of the University of California, San Diego, found that individuals with a higher degree of bilingualism — measured through a comparative evaluation of proficiency in each language — were more resistant than others to the onset of dementia and other symptoms of Alzheimer’s disease: the higher the degree of bilingualism, the later the age of onset.
    Nobody ever doubted the power of language. But who would have imagined that the words we hear and the sentences we speak might be leaving such a deep imprint? 

Source: www.nytimes.com
A
twilight years / old age.
B
keeping track / threading a line.
C
hindered / scattered.
D
stemmed / honed.
4e3ed6ed-af
UECE 2013 - Inglês - Vocabulário | Vocabulary, Sinônimos | Synonyms, Interpretação de texto | Reading comprehension

Considering the word shopper in the text, an example of a word with similar meaning is

TEXT
   
   HARVARD BUSINESS REVIEW calls data science “the sexiest job in the 21st century,” and by most accounts this hot new field promises to revolutionize industries from business to government, health care to academia. 
   The field has been spawned by the enormous amounts of data that modern technologies create — be it the online behavior of Facebook users, tissue samples of cancer patients, purchasing habits of grocery shoppers or crime statistics of cities. Data scientists are the magicians of the Big Data era. They crunch the data, use mathematical models to analyze it and create narratives or visualizations to explain it, then suggest how to use the information to make decisions. 
     In the last few years, dozens of programs under a variety of names have sprung up in response to the excitement about Big Data, not to mention the six-figure salaries for some recent graduates. In the fall, Columbia will offer new master’s and certificate programs heavy on data. The University of San Francisco will soon graduate its charter class of students with a master’s in analytics.
      Rachel Schutt, a senior research scientist at Johnson Research Labs, taught “Introduction to Data Science” last semester at Columbia (its first course with “data science” in the title). She described the data scientist this way: “a hybrid computer scientist software engineer statistician.” And added: “The best tend to be really curious people, thinkers who ask good questions and are O.K. dealing with unstructured situations and trying to find structure in them.”
      Eurry Kim, a 30-year-old “wannabe data scientist,” is studying at Columbia for a master’s in quantitative methods in the social sciences and plans to use her degree for government service. She discovered the possibilities while working as a corporate tax analyst at the Internal Revenue Service. She might, for example, analyze tax return data to develop algorithms that flag fraudulent filings, or cull national security databases to spot suspicious activity.
     Some of her classmates are hoping to apply their skills to e-commerce, where data about users’ browsing history is gold.
     “This is a generation of kids that grew up with data science around them — Netflix telling them what movies they should watch, Amazon telling them what books they should read — so this is an academic interest with real-world applications,” said Chris Wiggins, a professor of applied mathematics at Columbia who is involved in its new Institute for Data Sciences and Engineering. “And,” he added, “they know it will make them employable.”
  Universities can hardly turn out data scientists fast enough. To meet demand from employers, the United States will need to increase the number of graduates with skills handling large amounts of data by as much as 60 percent, according to a report by McKinsey Global Institute. There will be almost half a million jobs in five years, and a shortage of up to 190,000 qualified data scientists, plus a need for 1.5 million executives and support staff who have an understanding of data.
      Because data science is so new, universities are scrambling to define it and develop curriculums. As an academic field, it cuts across disciplines, with courses in statistics, analytics, computer science and math, coupled with the specialty a student wants to analyze, from patterns in marine life to historical texts.
    With the sheer volume, variety and speed of data today, as well as developing technologies, programs are more than a repackaging of existing courses. “Data science is emerging as an academic discipline, defined not by a mere amalgamation of interdisciplinary fields but as a body of knowledge, a set of professional practices, a professional organization and a set of ethical responsibilities,” said Christopher Starr, chairman of the computer science department at the College of Charleston, one of a few institutions offering data science at the undergraduate level.
     Most master’s degree programs in data science require basic programming skills. They start with what Ms. Schutt describes as the “boring” part — scraping and cleaning raw data and “getting it into a nice table where you can actually analyze it.” Many use data sets provided by businesses or government, and pass back their results. Some host competitions to see which student can come up with the best solution to a company’s problem.
     Studying a Web user’s data has privacy implications. Using data to decide someone’s eligibility for a line of credit or health insurance, or even recommending who they friend on Facebook, can affect their lives. “We’re building these models that have impact on human life,” Ms. Schutt said. “How can we do that carefully?” Ethics classes address these questions.
       Finally, students have to learn to communicate their findings, visually and orally, and they need business know-how, perhaps to develop new products.

From: www.nytimes.com
A
peer.
B
purchaser.
C
sheer.
D
sampler.
1aa162c3-fa
UECE 2018 - Inglês - Vocabulário | Vocabulary, Interpretação de texto | Reading comprehension

Scott Cairney, one of the researchers responsible for the study, explains that the results are relevant to understand

                                         T E X T


                          Can you learn in your sleep?


      Sleep is known to be crucial for learning and memory formation. What's more, scientists have even managed to pick out specific memories and consolidate them during sleep. However, the exact mechanisms behind this were unknown — until now.

      Those among us who grew up with the popular cartoon "Dexter's Laboratory" might remember the famous episode wherein Dexter's trying to learn French overnight. He creates a device that helps him to learn in his sleep by playing French phrases to him. Of course, since the show is a comedy, Dexter's record gets stuck on the phrase "Omelette du fromage" and the next day he's incapable of saying anything else. This is, of course, a problem that puts him through a series of hilarious situations.

      The idea that we can learn in our sleep has captivated the minds of artists and scientists alike; the possibility that one day we could all drastically improve our productivity by learning in our sleep is very appealing. But could such a scenario ever become a reality?

      New research seems to suggest so, and scientists in general are moving closer to understanding precisely what goes on in the brain when we sleep and how the restful state affects learning and memory formation.

      For instance, previous studies have shown that non-rapid eye movement (non-REM) sleep — or dreamless sleep — is crucial for consolidating memories. It has also been shown that sleep spindles, or sudden spikes in oscillatory brain activity that can be seen on an electroencephalogram (EEG) during the second stage of non-REM sleep, are key for this memory consolidation. Scientists were also able to specifically target certain memories and reactivate, or strengthen, them by using auditory cues.

      However, the mechanism behind such achievements remained mysterious until now. Researchers were also unaware if such mechanisms would help with memorizing new information.

      Therefore, a team of researchers set out to investigate. Scott Cairney, from the University of York in the United Kingdom, co-led the research with Bernhard Staresina, who works at the University of Birmingham, also in the U.K. Their findings were published in the journal Current Biology.

      Cairney explains the motivation for the research, saying, "We are quite certain that memories are reactivated in the brain during sleep, but we don't know the neural processes that underpin this phenomenon." "Sleep spindles," he continues, "have been linked to the benefits of sleep for memory in previous research, so we wanted to investigate whether these brain waves mediate reactivation. If they support memory reactivation, we further reasoned that it could be possible to decipher memory signals at the time that these spindles took place."

      To test their hypotheses, Cairney and his colleagues asked 46 participants "to learn associations between words and pictures of objects or scenes before a nap." Afterward, some of the participants took a 90-minute nap, whereas others stayed awake. To those who napped, "Half of the words were [...] replayed during the nap to trigger the reactivation of the newly learned picture memories," explains Cairney.

      "When the participants woke after a good period of sleep," he says, "we presented them again with the words and asked them to recall the object and scene pictures. We found that their memory was better for the pictures that were connected to the words that were presented in sleep, compared to those words that weren't," Cairney reports.

      Using an EEG machine, the researchers were also able to see that playing the associated words to reactivate memories triggered sleep spindles in the participants' brains. More specifically, the EEG sleep spindle patterns "told" the researchers whether the participants were processing memories related to objects or memories related to scenes.

      "Our data suggest that spindles facilitate processing of relevant memory features during sleep and that this process boosts memory consolidation," says Staresina. "While it has been shown previously," he continues, "that targeted memory reactivation can boost memory consolidation during sleep, we now show that sleep spindles might represent the key underlying mechanism."

      Cairney adds, "When you are awake you learn new things, but when you are asleep you refine them, making it easier to retrieve them and apply them correctly when you need them the most. This is important for how we learn but also for how we might help retain healthy brain functions."

      Staresina suggests that this newly gained knowledge could lead to effective strategies for boosting memory while sleeping.

      So, though learning things from scratch à la "Dexter's Lab" may take a while to become a reality, we can safely say that our brains continue to learn while we sleep, and that researchers just got a lot closer to understanding why this happens.

                                From: https://www.medicalnewstoday.com/articles/Mar/2018

A
how much brain work is carried out while a person sleeps.
B
how our brain functions while we are dreaming.
C
the way we learn and the way we keep healthy brain functions.
D
the relation between brain activity in sleep and our mood after waking.
1a9da95d-fa
UECE 2018 - Inglês - Vocabulário | Vocabulary, Interpretação de texto | Reading comprehension

Another finding of the research is related to the electroencephalogram (EEG) that was done while the participants were sleeping and exposed to the replay of the words, which revealed

                                         T E X T


                          Can you learn in your sleep?


      Sleep is known to be crucial for learning and memory formation. What's more, scientists have even managed to pick out specific memories and consolidate them during sleep. However, the exact mechanisms behind this were unknown — until now.

      Those among us who grew up with the popular cartoon "Dexter's Laboratory" might remember the famous episode wherein Dexter's trying to learn French overnight. He creates a device that helps him to learn in his sleep by playing French phrases to him. Of course, since the show is a comedy, Dexter's record gets stuck on the phrase "Omelette du fromage" and the next day he's incapable of saying anything else. This is, of course, a problem that puts him through a series of hilarious situations.

      The idea that we can learn in our sleep has captivated the minds of artists and scientists alike; the possibility that one day we could all drastically improve our productivity by learning in our sleep is very appealing. But could such a scenario ever become a reality?

      New research seems to suggest so, and scientists in general are moving closer to understanding precisely what goes on in the brain when we sleep and how the restful state affects learning and memory formation.

      For instance, previous studies have shown that non-rapid eye movement (non-REM) sleep — or dreamless sleep — is crucial for consolidating memories. It has also been shown that sleep spindles, or sudden spikes in oscillatory brain activity that can be seen on an electroencephalogram (EEG) during the second stage of non-REM sleep, are key for this memory consolidation. Scientists were also able to specifically target certain memories and reactivate, or strengthen, them by using auditory cues.

      However, the mechanism behind such achievements remained mysterious until now. Researchers were also unaware if such mechanisms would help with memorizing new information.

      Therefore, a team of researchers set out to investigate. Scott Cairney, from the University of York in the United Kingdom, co-led the research with Bernhard Staresina, who works at the University of Birmingham, also in the U.K. Their findings were published in the journal Current Biology.

      Cairney explains the motivation for the research, saying, "We are quite certain that memories are reactivated in the brain during sleep, but we don't know the neural processes that underpin this phenomenon." "Sleep spindles," he continues, "have been linked to the benefits of sleep for memory in previous research, so we wanted to investigate whether these brain waves mediate reactivation. If they support memory reactivation, we further reasoned that it could be possible to decipher memory signals at the time that these spindles took place."

      To test their hypotheses, Cairney and his colleagues asked 46 participants "to learn associations between words and pictures of objects or scenes before a nap." Afterward, some of the participants took a 90-minute nap, whereas others stayed awake. To those who napped, "Half of the words were [...] replayed during the nap to trigger the reactivation of the newly learned picture memories," explains Cairney.

      "When the participants woke after a good period of sleep," he says, "we presented them again with the words and asked them to recall the object and scene pictures. We found that their memory was better for the pictures that were connected to the words that were presented in sleep, compared to those words that weren't," Cairney reports.

      Using an EEG machine, the researchers were also able to see that playing the associated words to reactivate memories triggered sleep spindles in the participants' brains. More specifically, the EEG sleep spindle patterns "told" the researchers whether the participants were processing memories related to objects or memories related to scenes.

      "Our data suggest that spindles facilitate processing of relevant memory features during sleep and that this process boosts memory consolidation," says Staresina. "While it has been shown previously," he continues, "that targeted memory reactivation can boost memory consolidation during sleep, we now show that sleep spindles might represent the key underlying mechanism."

      Cairney adds, "When you are awake you learn new things, but when you are asleep you refine them, making it easier to retrieve them and apply them correctly when you need them the most. This is important for how we learn but also for how we might help retain healthy brain functions."

      Staresina suggests that this newly gained knowledge could lead to effective strategies for boosting memory while sleeping.

      So, though learning things from scratch à la "Dexter's Lab" may take a while to become a reality, we can safely say that our brains continue to learn while we sleep, and that researchers just got a lot closer to understanding why this happens.

                                From: https://www.medicalnewstoday.com/articles/Mar/2018

A
activation of brain areas not related to memories.
B
the type of brain activity going on: memory of objects or of scenes.
C
a huge net of synapses never registered when a person is sleeping.
D
a type of neuronal activity usually associated with dreams.
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UECE 2011 - Inglês - Vocabulário | Vocabulary, Interpretação de texto | Reading comprehension

The clause “Were the English language ever to need an official guardian, […].” would adequately be rephrased as:

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A
If the English language ever needed an official guardian,[…].
B
The English language is ever to need an official guardian, […].
C
The English language would need an official guardian, […].
D
Though the English language needed an official guardian, […].