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Young girls at high risk for depression appear to have a malfunctioning reward system in their brains, a new study suggests. The
Young girls at high risk for depression appear to have a malfunctioning reward system in their brains, a new study suggests. The
admin
2011-03-11
7
问题
Young girls at high risk for depression appear to have a malfunctioning reward system in their brains, a new study suggests. The finding comes from research that【1】a high-risk group of 13 girls, aged 10 to 14, who were not depressed but had mothers who【2】recurrent depression and a low-risk group of 13 girls with no【3】or family history of depression. Both groups were given MRI brain【4】while completing a task that could【5】either reward or punishment.
【6】with girls in the low-risk group, those in the high-risk group had【7】neural responses during both anticipation and receipt of the reward.【8】, the high-risk girls showed no【9】in an area of the brain called the dorsal anterior cingulated cortex (背侧前扣带皮质), believed to play a role in【10】past experiences to assist learning.
The high-risk girls did have greater activation of this brain area【11】receiving punishment, compared with the other girls. The researchers said that this suggests that high-risk girls have easier time【12】information about loss and punishment than information about reward and pleasure.
"Considered together with reduced activation in the striatal (纹状体的) areas commonly observed【13】reward, it seems that the reward-processing system is critically【14】in daughters who are at elevated risk for depression,【15】they have not yet experienced a depressive【16】," wrote Ian H. Gotlib, of Stanford University, and his colleagues. "【17】, longitudinal studies are needed to determine whether the anomalous activations【18】in this study during the processing of【19】and losses are associated with the【20】onset of depression," they concluded. The study was published in the April of the Archives of General Psychiatry.
选项
A、stronger
B、weaker
C、lower
D、higher
答案
B
解析
根据后一句“有高患病风险的女孩在大脑被称做背侧前扣带皮质的部位几乎没有______”,从no得知,本句所表达的反应应该与后一句一致,为负面反应,因此[B] weaker为正确答案。[A] stronger意义相反.可以排除。[C] lower不含有反应“微弱”之意,用法举例:Holiday prices are lower out of season.在度假淡季,度假费用较低。[D] higher用法举例:People always look forward to lower risks and higher earnings.人们总是期待较低的风险与较高的收益。
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0
考研英语一
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