全文获取类型
收费全文 | 4306篇 |
免费 | 223篇 |
出版年
2023年 | 42篇 |
2022年 | 41篇 |
2021年 | 79篇 |
2020年 | 89篇 |
2019年 | 125篇 |
2018年 | 179篇 |
2017年 | 166篇 |
2016年 | 196篇 |
2015年 | 134篇 |
2014年 | 154篇 |
2013年 | 511篇 |
2012年 | 238篇 |
2011年 | 254篇 |
2010年 | 149篇 |
2009年 | 151篇 |
2008年 | 222篇 |
2007年 | 181篇 |
2006年 | 151篇 |
2005年 | 121篇 |
2004年 | 138篇 |
2003年 | 142篇 |
2002年 | 107篇 |
2001年 | 86篇 |
2000年 | 89篇 |
1999年 | 61篇 |
1998年 | 48篇 |
1997年 | 43篇 |
1996年 | 26篇 |
1995年 | 26篇 |
1994年 | 25篇 |
1993年 | 17篇 |
1992年 | 39篇 |
1991年 | 28篇 |
1990年 | 50篇 |
1989年 | 46篇 |
1988年 | 39篇 |
1987年 | 24篇 |
1986年 | 33篇 |
1985年 | 34篇 |
1984年 | 29篇 |
1983年 | 18篇 |
1982年 | 17篇 |
1981年 | 12篇 |
1980年 | 11篇 |
1979年 | 20篇 |
1978年 | 11篇 |
1977年 | 9篇 |
1974年 | 9篇 |
1972年 | 14篇 |
1968年 | 8篇 |
排序方式: 共有4529条查询结果,搜索用时 78 毫秒
991.
Lotte F. van Dillen Henk van Steenbergen 《Cognitive, affective & behavioral neuroscience》2018,18(3):447-459
The present research examined whether cognitive load modulates the neural processing of appetitive, high-calorie food stimuli. In a functional magnetic resonance imaging (fMRI) study, participants quickly categorized high-calorie and low-calorie food pictures versus object pictures as edible or inedible while they concurrently performed a digit-span task that varied between low and high cognitive load (memorizing six digits vs. one digit). In line with predictions, the digit-span task engaged the dorsolateral prefrontal cortex (DLPFC) when cognitive load was high compared to low. Moreover, exposure to high-calorie compared to low-calorie food pictures led to increased activation in the nucleus accumbens (NAcc), but only when cognitive load was low and not when it was high. In addition, connectivity analyses showed that load altered the functional coupling between NAcc and right DLPFC during presentation of the high-calorie versus low-calorie food pictures. Together, these findings indicate that loading the cognitive system moderates hedonic brain responses to high-calorie food pictures via interactions between NAcc and DLPFC. Our findings are consistent with the putative cognitive nature of food motivation. Implications for future research are discussed. 相似文献
992.
In natural scenes, audiovisual events deriving from the same source are synchronized at their origin. However, from the perspective of the observer, there are likely to be significant multisensory delays due to physical and neural latencies. Fortunately, our brain appears to compensate for the resulting latency differences by rapidly adapting to asynchronous audiovisual events by shifting the point of subjective synchrony (PSS) in the direction of the leading modality of the most recent event. Here we examined whether it is the perceived modality order of this prior lag or its physical order that determines the direction of the subsequent rapid recalibration. On each experimental trial, a brief tone pip and flash were presented across a range of stimulus onset asynchronies (SOAs). The participants’ task alternated over trials: On adaptor trials, audition either led or lagged vision with fixed SOAs, and participants judged the order of the audiovisual event; on test trials, the SOA as well as the modality order varied randomly, and participants judged whether or not the event was synchronized. For test trials, we showed that the PSS shifted in the direction of the physical rather than the perceived (reported) modality order of the preceding adaptor trial. These results suggest that rapid temporal recalibration is determined by the physical timing of the preceding events, not by one’s prior perceptual decisions. 相似文献
993.
994.
Subliminal primes are assumed to produce weaker and short-lived effects on subsequent behavior compared to clearly visible primes. However, this difference in priming effect may be due to differences in signal strength, rather than level of awareness. In the present study we manipulated prime discriminability by using metacontrast masks and pseudomasks, while keeping the prime strength equal. This manipulation resulted in large differences in discriminability of the primes. However, both immediate response priming and long-term response priming (measured with conflict adaptation) was equal for the poorly discriminable and well discriminable primes, and equal for groups that differed markedly in terms of how well they could discriminate the primes. Our findings imply that discriminability of information is independent of both the immediate and long-term effects that information can have on behavior. 相似文献
995.
Experiences of having caused a certain outcome may arise from motor predictions based on action–outcome probabilities and causal inferences based on pre-activated outcome representations. However, when and how both indicators combine to affect such self-agency experiences is still unclear. Based on previous research on prediction and inference effects on self-agency, we propose that their (combined) contribution crucially depends on whether people have knowledge about the causal relation between actions and outcomes that is relevant to subsequent self-agency experiences. Therefore, we manipulated causal knowledge that was either relevant or irrelevant by varying the probability of co-occurrence (50% or 80%) of specific actions and outcomes. Afterwards, we measured self-agency experiences in an action–outcome task where outcomes were primed or not. Results showed that motor prediction only affected self-agency when relevant actions and outcomes were learned to be causally related. Interestingly, however, inference effects also occurred when no relevant causal knowledge was acquired. 相似文献
996.
997.
998.
Understanding the neurophysiological mechanisms of learning is important for both fundamental and clinical neuroscience. We present a neurophysiologically inspired framework for understanding cortical mechanisms of feedback-guided learning. This framework is based on dynamic changes in systems-level oscillatory synchronization, reflecting changes in synaptic plasticity between stimulus-processing and motor areas that are modulated in a top-down fashion by different areas of the prefrontal cortex. We make new and testable predictions for how large-scale cortical networks support learning from feedback. Testing these predictions may provide new insights into the basic mechanisms underlying learning and how these mechanisms may be impaired in clinical disorders in which feedback learning is compromised. 相似文献
999.
This article discusses the way in which a group of contemporary cultural theorists in whose work we see a “new materialism” (a term coined by Braidotti and DeLanda) at work constitutes a philosophy of difference by traversing the dualisms that form the backbone of modernist thought. Continuing the ideas of Lyotard and Deleuze they have set themselves to a rewriting of all possible forms of emancipation that are to be found. This rewriting exercise involves a movement in thought that, in the words of Bergson, can be termed “pushing dualism to an extreme.” By this movement, Deleuze has stated, “difference is pushed to the limit,” that is, using Colebrook’s words, “difference is shown differing.” The article addresses the ways in which modernity’s dualisms (structured by a negative relation between terms) are traversed, and how a new conceptualization, and ontology, of difference (structured by an affirmative relation) comes to be constituted along the way. New materialism leaves behind all prioritizations (implicitly) involved in modern dualist thinking since a difference structured by affirmation does not work with predetermined relations (e.g., between mind and body) nor does it involve a (counter-)hierarchy between terms. The article makes explicit the methodology of the current-day rise of non-dualist thought, both in terms of its non-classificatory mode of (Deleuzian) thinking and in terms of the theory of the time of thought thus effectuated (Lyotard’s notion of ‘rewriting modernity’ is not a post-modernism). Throughout the article we will engage with an example in order to demonstrate the ontology that is being practiced following this methodology: How does a new (feminist) materialism traverse the sexual dualisms that structure modernist (feminist) thinking? This example also shows how a feminist post-modernism (found in the canonical work of Butler) has remained dualist, and what makes new materialism “new.” Freed from a dualist methodology, the modernist emancipatory project comes to full fruition in new materialism. 相似文献
1000.
van Dijk WW van Koningsbruggen GM Ouwerkerk JW Wesseling YM 《Emotion (Washington, D.C.)》2011,11(6):1445-1449
In two studies we demonstrated that self-esteem has a negative relationship with schadenfreude toward a high achiever and that this relationship was mediated by the self-threat evoked by this high achiever. Moreover, we showed that this indirect relationship was contingent on an opportunity to affirm the self. When no self-affirmation opportunity was available, low self-esteem participants experienced a stronger self-threat when confronted with a high achiever, and this self-threat increased their schadenfreude, whereas this response was attenuated when they were given an opportunity to self-affirm. These findings indicate that the misfortunes of others can evoke schadenfreude because they provide people with an opportunity to protect or enhance their self-views. 相似文献