首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   667篇
  免费   53篇
  国内免费   124篇
  844篇
  2024年   1篇
  2023年   16篇
  2022年   15篇
  2021年   17篇
  2020年   37篇
  2019年   45篇
  2018年   45篇
  2017年   38篇
  2016年   24篇
  2015年   24篇
  2014年   25篇
  2013年   85篇
  2012年   25篇
  2011年   29篇
  2010年   29篇
  2009年   34篇
  2008年   39篇
  2007年   34篇
  2006年   31篇
  2005年   23篇
  2004年   41篇
  2003年   22篇
  2002年   33篇
  2001年   26篇
  2000年   26篇
  1999年   6篇
  1998年   5篇
  1997年   7篇
  1996年   16篇
  1995年   2篇
  1994年   15篇
  1993年   6篇
  1992年   3篇
  1991年   2篇
  1990年   4篇
  1989年   2篇
  1988年   2篇
  1985年   2篇
  1984年   1篇
  1982年   1篇
  1981年   1篇
  1979年   2篇
  1978年   1篇
  1976年   2篇
排序方式: 共有844条查询结果,搜索用时 15 毫秒
811.
The aim of this article is to show how theology can, through the medium of film, engage contemporary interpretations of Jesus’ person and work. Starting out by tracing the development taking place in films about Jesus throughout the twentieth century, the focus then moves to a theological reading of Mel Gibson's interpretation of the passion story for the twenty‐first century in his movie The Passion of the Christ.  相似文献   
812.
Recent studies have used non-invasive brain stimulation (NIBS) techniques, such as repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS), to increase dorsolateral prefrontal cortex (DLPFC) activity and, consequently, working memory (WM) performance. However, such experiments have yielded mixed results, possibly due to small sample sizes and heterogeneity of outcomes. Therefore, our aim was to perform a systematic review and meta-analyses on NIBS studies assessing the n-back task, which is a reliable index for WM. From the first data available to February 2013, we looked for sham-controlled, randomized studies that used NIBS over the DLPFC using the n-back task in PubMed/MEDLINE and other databases. Twelve studies (describing 33 experiments) matched our eligibility criteria. Active vs. sham NIBS was significantly associated with faster response times (RTs), higher percentage of correct responses and lower percentage of error responses. However, meta-regressions showed that tDCS (vs. rTMS) presented only an improvement in RT, and not in accuracy. This could have occurred in part because almost all tDCS studies employed a crossover design, possibly due to the reliable tDCS blinding. Study design was also associated with no improvement in correct responses in the active vs. sham groups. To conclude, rTMS of the DLPFC significantly improved all measures of WM performance whereas tDCS significantly improved RT, but not the percentage of correct and error responses. Mechanistic insights on the role of DLPFC in WM are further discussed, as well as how NIBS techniques could be used in neuropsychiatric samples presenting WM deficits, such as major depression, dementia and schizophrenia.  相似文献   
813.
Thinking ahead or not? Natural aging and anticipation during reading   总被引:1,自引:0,他引:1  
Despite growing evidence of young adults neurally pre-activating word features during sentence comprehension, less clear is the degree to which this generalizes to older adults. Using ERPs, we tested for linguistic prediction in younger and older readers by means of indefinite articles (a’s and an’s) preceding more and less probable noun continuations. Although both groups exhibited cloze probability-graded noun N400s, only the young showed significant article effects, indicating probabilistic sensitivity to the phonology of anticipated upcoming nouns. Additionally, both age groups exhibited prolonged increased frontal positivities to less probable nouns, although in older adults this effect was prominent only in a subset with high verbal fluency (VF). This ERP positivity to contextual constraint violations offers additional support for prediction in the young. For high VF older adults, the positivity may indicate they, too, engage in some form of linguistic pre-processing when implicitly cued, as may have occurred via the articles.  相似文献   
814.
Upon stimulation, real time maps of cortical hemodynamic responses can be obtained by non-invasive functional near-infrared spectroscopy (fNIRS) which measures changes in oxygenated and deoxygenated hemoglobin after positioning multiple sources and detectors over the human scalp. The current commercially available transportable fNIRS systems have a time resolution of 1-10 Hz, a depth sensitivity of about 1.5 cm, and a spatial resolution of about 1 cm. The goal of this brief review is to report infants, children and adults fNIRS language studies. Since 1998, 60 studies have been published on cortical activation in the brain’s classic language areas in children/adults as well as newborns using fNIRS instrumentations of different complexity. In addition, the basic principles of fNIRS including features, strengths, advantages, and limitations are summarized in terms that can be understood even by non specialists. Future prospects of fNIRS in the field of language processing imaging are highlighted.  相似文献   
815.
Exploring how people represent natural categories is a key step toward developing a better understanding of how people learn, form memories, and make decisions. Much research on categorization has focused on artificial categories that are created in the laboratory, since studying natural categories defined on high-dimensional stimuli such as images is methodologically challenging. Recent work has produced methods for identifying these representations from observed behavior, such as reverse correlation (RC). We compare RC against an alternative method for inferring the structure of natural categories called Markov chain Monte Carlo with People (MCMCP). Based on an algorithm used in computer science and statistics, MCMCP provides a way to sample from the set of stimuli associated with a natural category. We apply MCMCP and RC to the problem of recovering natural categories that correspond to two kinds of facial affect (happy and sad) from realistic images of faces. Our results show that MCMCP requires fewer trials to obtain a higher quality estimate of people's mental representations of these two categories.  相似文献   
816.
前摄干扰(PI)对工作记忆有决定性影响.注意加工理论认为处于工作记忆“注意焦点”的信息不受PI影响,偏向-竞争理论则提出个体对熟悉信息和情景信息代码做出权重评估,解决工作记忆PI效应.研究者从工作记忆编码和提取加工的PI效应、内容相关和情景相关的PI效应、PI消除的脑成像特征等角度进行了验证,多数结果支持偏向-竞争理论.未来研究应使用脑成像技术探讨PI效应与工作记忆子系统、子功能之间的关系等主题.  相似文献   
817.
This study examines the relation between the error-related negativity (ERN) and post-error behavior over time in healthy young adults (N=61). Event-related brain potentials were collected during two sessions of an identical flanker task. Results indicated changes in ERN and post-error accuracy were related across task sessions, with more negative ERN associated with greater improvements in post-error accuracy. This relationship was independent of any cross-sectional relationships between overall task performance, individual difference factors, including personality and self-efficacy, and indices of self-regulatory action monitoring. These results indicate that the relation between ERN and post-error accuracy remains intact and consistent regardless of variation in this set of individual difference factors previously associated with both of these indices of self-regulatory action monitoring, providing support for the strength, robustness, and persistence of this relationship in the process of adaptively controlling behavior to enhance task performance.  相似文献   
818.
ABSTRACT

Thirty-eight million women will experience intimate partner violence (IPV) during the course of their lifetime. Many of these women will experience brain injuries as a result of IPV and may not seek medical attention. Several types of practitioners who work with IPV survivors consistently, e.g., first responders, advocates, and clinicians, may be unfamiliar with brain functioning, screening, assessment, and treatment. This article reviews the dual traumas of IPV and TBI, the impact on neurological processes and symptomatology, and short and long-term outcomes. Recommendations for screening, intervention, interprofessional collaboration, and research are outlined.  相似文献   
819.
自伤是遗传与环境共同作用的结果。目前对于自伤行为的探讨已深入到基因及神经系统层面,基因-脑-行为的综合视角为客观揭示自伤产生机制提供了一条有效途径。本文将在已有研究的基础上,结合分子遗传学和神经生物学的最新成果,对自伤候选基因多态性及其可能的脑机制进行系统阐述,并提出今后应在基因多态性的交互作用及其脑机制、积极环境下自伤行为研究、自伤青少年的追踪研究以及自伤行为的系统性探讨等方面进一步深化。  相似文献   
820.
Variability in findings related to non-invasive brain stimulation (NIBS) have increasingly been described as a result of differences in neurophysiological state. Additionally, there is some evidence suggesting that individual differences in psychological states may correlate with the magnitude and directionality of effects of NIBS on the neural and behavioural level. In this narrative review, it is proposed that the assessment of baseline affective states can quantify non-reductive properties which are not readily accessible to neuroscientific methods. Particularly, affective-related states are theorized to correlate with physiological, behavioural and phenomenological effects of NIBS. While further systematic research is needed, baseline psychological states are suggested to provide a complementary cost-effective source of information for understanding variability in NIBS outcomes. Implementing measures of psychological state may potentially contribute to increasing the sensitivity and specificity of results in experimental and clinical NIBS studies.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号