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cognitive activity
相关语句
  认知活动
    Method of monitoring cerebral cognitive activity in sleep transition process by means of behavioral response magnitude
    以行为反应量监测睡眠过渡过程中脑的认知活动
短句来源
    Face recognition is an important cognitive activity. But its mechanisms and processes are still not clear.
    面孔识别是一种重要的认知活动,但对其认知过程及脑机制尚不完全清楚。
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  cognitive activity
At follow-up of 4-8 months, physical activity, strength, people one could turn to for help, and cognitive activity increased significantly, and walking speed decreased significantly less, in participants compared to controls.
      
The Experience Corps? places older volunteers in public elementary schools in roles designed to meet schools' needs and increase the social, physical, and cognitive activity of the volunteers.
      
Problem solving is generally regarded as the most important cognitive activity in everyday and professional contexts.
      
Sex differences in cognitive activity were investigated.
      
This paper proposes that current psychometric intelligence tests are limited in evaluating cognitive activity.
      
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AIM:To investigate the changes of brain bioelectrical activities in children with mental retardation(MR),and to explore the relationship of the cognitive activity and intellectual status with the senior neuroelectrical activity. METHODS:The auditory event related potential(ERP),electroencephalogram(EEG) and brain electrical activity map(BEAM) examination were conducted in 42 MR children(study group) and 40 normal children(control group),respectively.The wave amplitude and latency of ERP P300,differentiation...

AIM:To investigate the changes of brain bioelectrical activities in children with mental retardation(MR),and to explore the relationship of the cognitive activity and intellectual status with the senior neuroelectrical activity. METHODS:The auditory event related potential(ERP),electroencephalogram(EEG) and brain electrical activity map(BEAM) examination were conducted in 42 MR children(study group) and 40 normal children(control group),respectively.The wave amplitude and latency of ERP P300,differentiation and distribution of EEG,changes of BEAM δ,θelectrical wave power were observed. RESULTS:In the study group,the latency of auditory ERP P300 was 355 ms,significantly prolonged as compared with that in the control group(316 ms)(t=3.143,P< 0.01),the differentiation of wave form was worse,and the amplitude of P300 was 5.55 μV,obviously lower than that in the control group(6.08 μV)(t=2.602,P< 0.05).The differentiation of the waves in EEG was worse,and the distribution was abnormal.The BEAM showed that the powers of θand δwaves in the study group were 26.85 μV2 and 2.30 μV2,respectively,highly and significantly different from those in the control group(18.85 μV2 and 1.64 μV2)(t=3.748,P< 0.01;t= 6.398,P< 0.001).CONCLUSION:There is a close relation between the cognitive function and high neuroelectrical activity.The results of ERP,EEG and BEAM can objectively reflect the cognitive function of children with MR.

目的:了解弱智儿童脑生物电活动的变化,探讨弱智儿童的认知行为、智能状况与脑的高级神经电活动之间的关系。方法:分别对42例弱智儿童(实验组)和40例正常儿童(对照组)进行听觉事件相关电位、脑电图和脑电地形图检测,观察其事件相关电位P300波幅和潜伏期长短、脑电图各波分化、分布及脑电地形图δ,θ电波功率的变化。结果:实验组听觉事件相关电位P300潜伏期为355ms,较对照组的316ms明显延长(t=3.143,P<0.01),波形分化较差,波幅为5.55μV,明显低于对照组的6.08μV(t=2.602,P<0.05)。脑电图各波分化较差,分布失正常规律,脑电地形图显示实验组θ,δ等慢波电功率分别为26.85μV2和2.30μV2,而对照组分别为18.85μV2和1.64μV2,两组比较差异均有非常显著性意义(t=3.748,P<0.01,t=6.398,P<0.001)。结论:脑的认知功能与其高级神经的电活动密切相关,事件相关电位和脑电图、脑电地形图检测的结果,可以较客观的反映弱智儿童的脑认知功能状况。

 
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