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1.
蒙特利尔认知评估量表在轻度认知功能障碍筛查中的应用   总被引:9,自引:1,他引:8  
目的 探讨蒙特利尔认知评估量表(MoCA)在轻度认知功能障碍(MCI)患者筛查中的应用.方法 应用简易精神状态检查量表(MMSE)、MoCA对32例MCI患者和50例健康对照者进行神经心理评估,比较二者筛查MCI的效果.结果 以26分为分界值,MoCA筛查MCI的敏感性为96.87%、特异性为76%,MMSE筛查MCI的敏感性为56.25%、特异性为96%;MoCA中除抽象思维、地点定向两项外,其余各亚项的评分在MCI组和对照组间差异均有统计学意义(P<0.05):MMSE中仅计算与注意力、延迟回忆两项在MCI组和对照组间差异有统计学意义(P<0.05),其余各项差异均无统计学意义(P>0.05).结论 MoCA为高敏感性的MCI筛查工具,能全面评估MCI患者的认知功能.且可用于筛查MMSE得分正常的MCI患者.  相似文献
2.
胰岛素抵抗与轻度认知功能障碍关系的临床研究   总被引:5,自引:1,他引:4  
目的探讨胰岛素抵抗(IR)与轻度认知功能障碍(MCI)的关系;明确IR是否为MCI的独立危险因素。方法102例IR患者进行MMSE、GDS、CMS、ADL等评测;按Petersen标准诊断MCI。结果IR患者MCI发病率高,且重型IR患者高于轻型IR患者、患有糖尿病(DM)的IR患者高于非DM的IR患者、以血糖控制不良者为甚;MCI患者表现IR且空腹胰岛素水平高(P〈0.01)。Logistic回归分析显示受教育程度、空腹胰岛素水平、高血压病、糖化血红蛋白最终进入方程。结论IR患者MCI发生率较高,氓的MCI患者空腹胰岛素水平高;IR影响认知功能的各个环节;IR、高胰岛素水平、高血压病和高血糖是MCI的独立危险因素。  相似文献
3.
中文版MoCA和MMSE在诊断遗忘型轻度认知功能障碍中的应用   总被引:4,自引:0,他引:4  
目的 研究中文版蒙特利尔认知评估量表(MoCA)在遗忘型轻度认知障碍(aMCI)诊断筛查中的作用. 方法 以2009-05-2010-03在卫生部北京医院神经内科门诊就诊的患者为检查对象,筛选出aMCI患者31例及健康对照者30名,分别进行简易精神状态量表(MMSE)、MoCA等量表检测,计算两量表诊断aMCI的敏感性和特异性并进行比较,分析MoCA在诊断aMCI中的作用和特点. 结果 以26分作为分界值时,MMSE和MoCA诊断aMCI的敏感性分别为9.68%和87.10%,特异性分别为93.33%和73.33%.MoCA的敏感性显著高于MMSE. 结论与MMSE 相比,MoCA以其较高的敏感性在筛查aMCI中具有较大作用,而且可对多个认知领域的功能进行检测,有望在多个认知损害类型的研究中起到重要作用.  相似文献
4.
认知功能筛查量表在MCI和轻度AD患者中的应用   总被引:4,自引:0,他引:4  
目的:探讨认知功能筛查量表在轻度认知功能损害(Mild Cognitive Impairment,MCI)和轻度阿尔茨海默病(Alzhei mer disease,AD)患者中的应用。方法:对61例MCI患者和47例轻度AD患者进行系列神经心理学测验,同时选择41例正常老年人做对照。结果:MCI组和正常老年人比较,MGR、MMSE的短时记忆亚项、FOM、LM、DR、CDT均有统计学差异。轻度AD组和MCI组比较,MMSE的即刻记忆亚项、RVR、DS、ADL、IADL、POD均有统计学差异。CES-D在三组间无统计学差异。结论:MGR量表可用来鉴别正常人和认知功能损害人群,但不宜用来鉴别MCI和轻度AD患者。RVR和DS量表可以用于鉴别MCI和轻度AD患者。ADL量表在轻度AD患者显示损害,提示AD患者存在日常生活行为能力的损害。  相似文献
5.
A 24-week, randomized, double-blind placebo-controlled study was carried out to test the feasibility of using omega-3 polyunsaturated fatty acids (PUFAs) monotherapy in people with cognitive impairment and to explore its effects on cognitive function and general clinical condition in these participants. Twenty three participants with mild or moderate Alzheimer's disease and twenty three with mild cognitive impairment were randomized to receive omega-3 PUFAs 1.8 g/day or placebo (olive oil). The data of 35 (76%) participants with at least one post-treatment visit was analyzed. There were no severe adverse effects in either group and it suggests that omega-3 PUFAs were well tolerable in this population. The treatment group showed better improvement on the Clinician's Interview-Based Impression of Change Scale (CIBIC-plus) than those in the placebo group over the 24 week follow-up (p=0.008). There was no significant difference in the cognitive portion of the Alzheimer's Disease Assessment Scale (ADAS-cog) change during follow-up in these two groups. However, the omega-3 fatty acids group showed significant improvement in ADAS-cog compared to the placebo group in participants with mild cognitive impairment (p=0.03), which was not observed in those with Alzheimer's disease. Higher proportions of eicosapentaenoic acid on RBC membranes were also associated with better cognitive outcome (p=0.003). Further studies should be considered with a larger-sample size, diet registration, higher dosages, comparisons between different combinations of PUFAs, and greater homogeneity of participants, especially those with mild Alzheimer's disease and mild cognitive impairment.  相似文献
6.
广州市60岁及以上老人轻度认知障碍的患病率调查   总被引:3,自引:0,他引:3  
目的调查广州地区城乡年龄≥60岁老人中轻度认知障碍(MCI)的患病率。方法用分层随机整群抽样方法抽样,采用筛查和确诊两阶段法进行调查,实查年龄≥60岁老人4697人,失访率4.9%。MCI诊断需符合Petersen的诊断标准及临床痴呆程度评定量表(CDR)评分等于0.5。结果①检出MCI患者257例,粗患病率为5.47%,经广州市2000年人口年龄构成标化,MCI的患病率为4.94%;②其中男女MCI患者分别为67例和190例,女性粗患病率显著高于男性(6.87%vs 3.47%,P<0.001),年龄标化患病率分别为6.51%和2.90%;③MCI患病率随年龄的增加而增高(P<0.001);④城区MCI粗患病率略低于农村,但差异无统计学意义(5.22%vs 6.66%,P>0.05);⑤有脑血管病史患者MCI的患病率高于无脑血管病史的老人(10.93%vs 5.08%,P<0.001)。⑥血管性非痴呆认知障碍(VMCI)的患病率为0.72%,男女两性的患病率差异无统计学意义(P>0.05)。结论MCI患病率随年龄增长而增高,女性高于男性,有脑血管病史者患病率较高,提示高龄、女性、有脑血管病史是MCI的易感因素。  相似文献
7.
Abstract Objective To assess the association of Medial Temporal lobe Atrophy (MTA) and White Matter Hyperintensities (WMHs) with gray matter perfusion in Mild Cognitive Impairment (MCI). Methods 56 MCI patients (age = 69.3 ± 7.0, 32 females) underwent brain MR scan and 99mTc ECD SPECT. We evaluated MTA according to Scheltens' fivepoint scale on T1 MR images, and assessed WMHs using the rating scale for age-related white matter changes on T2-weighted and FLAIR MR images. We divided MCI into age-matched subgroups with high and low MTA and high and low WMHs load. We processed SPECT images with SPM2 following an optimized protocol and performed a voxel-based statistical analysis comparing high vs. low MTA and high vs. low WMHs, setting p-value at 0.001 uncorrected, thresholding cluster extent at 100 voxels, using proportional scaling and entering age and WMHs or MTA respectively as nuisance covariates. Results MCI with high compared with low MTA showed hypoperfusion in the left hippocampus and in the left parahippocampal gyrus. MCI with high compared with low WMHs showed a hypoperfusion area in the left insular region and superior temporal gyrus. Conclusions MTA in MCI is associated with hippocampal gray matter hypoperfusion while WMHs is associated with gray matter hypoperfusion in areas of the insula and temporal neocortex. These results confirm that MTA is associated with local functional changes and suggest that WMHs may be associated with remote brain cortical dysfunction.  相似文献
8.
目的:应用MR弥散张量成像(DTI)观察阿尔茨海默病(AD)患者脑白质纤维束完整性。方法:健康老年志愿者为对照组(NC)组、遗忘型轻度认知障碍(aMCI)组、AD组和皮质下缺血性血管性痴呆(SIVD)组各20例,行常规MRI和DTI扫描后,测定相同感兴趣区(ROI)的各向异性分数(FA)值和表观扩散系数(ADC)值进行比较。结果:与NC组比较, AD组前额叶、颞叶、海马等部位FA值降低,颞叶、海马等部位ADC值升高(P〈0.05);aMCI组仅扣带束FA值降低,与AD组比差异有统计学意义(P〈0.05);SIVD组下额枕束等部位FA值下降,ADC值升高,与AD组比较差异有统计学意义(P〈0.05)。结论:DTI可以用来评估白质纤维束完整性,AD组白质损害甚于aMCI患者;扣带束FA值可以作为aMCI患者筛查的指标;根据受累部位不同可对SIVD与AD进行鉴别。  相似文献
9.
事件相关电位在轻度认知功能障碍诊断中的意义   总被引:2,自引:0,他引:2  
目的探讨轻度认知功能障碍和阿尓茨篋〉氖录喙氐缥?ERP:N100、P300)变化。方法根据Peterson制订的MCI诊断标准,筛选出21例MCI患者(MCI组),22例正常对照者(NC组)以及20例阿尓茨篋?AD)组患者,分别用英国OXFORD脑电生理仪记录事件相关电位(ERP:N100,P300)和视觉诱发电位(VEP)情况。结果(1)AD组MMSE评分(16.52±2.17分)及MCI组(24.33±1.34分)低于正常对照组[(26.57±1.43)分,P<0.01]。(2)AD组与MCI组靶波幅P3和非靶波幅P2均见降低,与NC组比较也有显著性差异(P<0.05、P<0.01)。(3)N100潜伏期、波幅变化不是很大(P>0.05)。(4)AD组P300靶刺激中的P2、P3波潜伏期与MMSE分值呈负相关(P<0.05、P<0.01)。结论AD和MCI患者的P300有多项指标异常对于临床诊断AD和MCI患者有一定价值。事件相关电位与认知功能存在明显相关性,提示事件相关电位可以客观反映AD和MCI患者的认知功能障碍。  相似文献
10.
The hippocampus is the brain structure of highest and earliest structural alteration in Alzheimer's disease (AD). New developments in neuroimaging methods recently made it possible to assess the respective involvement of the different hippocampal subfields by mapping atrophy on a 3D hippocampal surface view. In this longitudinal study on patients with mild cognitive impairment (MCI), we used such an approach to map the profile of hippocampal atrophy and its progression over an 18-month follow-up period in rapid converters to AD and "non-converters" compared to age-matched controls. For the sake of comparison, we also assessed the profile of hippocampal atrophy associated with AD and with increasing age in a healthy control population ranging from young adult to elderly. We found major involvement of the lateral part of the superior hippocampus mainly corresponding to the CA1 subfield in MCI and AD while increasing age was mainly associated with subiculum atrophy in the healthy population. Moreover, the CA1 subfield also showed highest atrophy rates during follow-up, in both rapid converters and "non-converters" although increased effects were observed in the former group. This study emphasizes the differences between normal aging and AD processes leading to hippocampal atrophy, pointing to a specific AD-related CA1 involvement while subiculum atrophy would represent a normal aging process. Our findings also suggest that the degree of hippocampal atrophy, more than its spatial localization, predicts rapid conversion to AD in patients with MCI.  相似文献
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