全文获取类型
收费全文 | 2206篇 |
免费 | 104篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 10篇 |
儿科学 | 129篇 |
妇产科学 | 50篇 |
基础医学 | 161篇 |
口腔科学 | 90篇 |
临床医学 | 184篇 |
内科学 | 529篇 |
皮肤病学 | 89篇 |
神经病学 | 205篇 |
特种医学 | 119篇 |
外科学 | 346篇 |
综合类 | 16篇 |
预防医学 | 44篇 |
眼科学 | 55篇 |
药学 | 52篇 |
中国医学 | 1篇 |
肿瘤学 | 237篇 |
出版年
2024年 | 1篇 |
2023年 | 84篇 |
2022年 | 122篇 |
2021年 | 120篇 |
2020年 | 154篇 |
2019年 | 86篇 |
2018年 | 62篇 |
2017年 | 90篇 |
2016年 | 106篇 |
2015年 | 100篇 |
2014年 | 183篇 |
2013年 | 151篇 |
2012年 | 128篇 |
2011年 | 89篇 |
2010年 | 137篇 |
2009年 | 126篇 |
2008年 | 97篇 |
2007年 | 83篇 |
2006年 | 78篇 |
2005年 | 57篇 |
2004年 | 47篇 |
2003年 | 38篇 |
2002年 | 23篇 |
2001年 | 34篇 |
2000年 | 28篇 |
1999年 | 35篇 |
1998年 | 13篇 |
1997年 | 13篇 |
1996年 | 9篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1992年 | 2篇 |
1991年 | 6篇 |
1990年 | 1篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1984年 | 3篇 |
1982年 | 3篇 |
1978年 | 1篇 |
排序方式: 共有2317条查询结果,搜索用时 296 毫秒
1.
2.
3.
4.
5.
《International journal of psychophysiology》2015,97(3):191-200
Major depressive disorder (MDD) is recurrent, and its pathophysiology is not fully understood. Studies using electric tomography (ET) have identified abnormalities in the current density (CD) of MDD subjects in regions associated with the neurobiology of MDD, such as the anterior cingulate cortex (ACC) and medial orbitofrontal cortex (mOFC). However, little is known regarding the long-term CD changes in MDD subjects who respond to antidepressants. The aim of this study was to compare CD between healthy and MDD subjects who received 1-year open-label treatment with fluoxetine.Thirty-two-channel electroencephalograms (EEGs) were collected from 70 healthy controls and 74 MDD subjects at baseline (pre-treatment), 1 and 2 weeks and 1, 2, 6, 9 and 12 months. Variable-resolution ET (VARETA) was used to assess the CD between subject groups at each time point. The MDD group exhibited decreased alpha CD (αCD) in the occipital and parietal cortices, ACC, mOFC, thalamus and caudate nucleus at each time point. The αCD abnormalities persisted in the MDD subjects despite their achieving full remission. The low sub-alpha band was different between the healthy and MDD subjects. Differences in the amount of αCD between sexes and treatment outcomes were observed. Lack of a placebo arm and the loss of depressed patients to follow-up were significant limitations. The persistence of the decrease in αCD might suggest that the underlying pathophysiologic mechanisms of MDD are not corrected despite the asymptomatic state of MDD subjects, which could be significant in understanding the highly recurrent nature of MDD. 相似文献
6.
7.
8.
9.
10.