全文获取类型
收费全文 | 6747篇 |
免费 | 98篇 |
国内免费 | 53篇 |
出版年
2018年 | 16篇 |
2014年 | 16篇 |
2013年 | 11篇 |
2012年 | 720篇 |
2011年 | 808篇 |
2010年 | 197篇 |
2009年 | 87篇 |
2008年 | 596篇 |
2007年 | 647篇 |
2006年 | 541篇 |
2005年 | 464篇 |
2004年 | 421篇 |
2003年 | 429篇 |
2002年 | 342篇 |
2001年 | 243篇 |
2000年 | 287篇 |
1999年 | 144篇 |
1998年 | 26篇 |
1997年 | 22篇 |
1996年 | 19篇 |
1995年 | 26篇 |
1994年 | 30篇 |
1993年 | 30篇 |
1992年 | 28篇 |
1991年 | 38篇 |
1990年 | 36篇 |
1989年 | 42篇 |
1988年 | 48篇 |
1987年 | 33篇 |
1986年 | 37篇 |
1985年 | 37篇 |
1984年 | 18篇 |
1983年 | 29篇 |
1982年 | 16篇 |
1981年 | 34篇 |
1980年 | 12篇 |
1979年 | 11篇 |
1978年 | 19篇 |
1965年 | 19篇 |
1964年 | 12篇 |
1963年 | 14篇 |
1959年 | 12篇 |
1958年 | 36篇 |
1957年 | 34篇 |
1956年 | 23篇 |
1955年 | 16篇 |
1954年 | 15篇 |
1953年 | 16篇 |
1952年 | 12篇 |
1950年 | 14篇 |
排序方式: 共有6898条查询结果,搜索用时 15 毫秒
831.
Large-scale neural network for sentence processing 总被引:4,自引:0,他引:4
Cooke A Grossman M DeVita C Gonzalez-Atavales J Moore P Chen W Gee J Detre J 《Brain and language》2006,96(1):14-36
Our model of sentence comprehension includes at least grammatical processes important for structure-building, and executive resources such as working memory that support these grammatical processes. We hypothesized that a core network of brain regions supports grammatical processes, and that additional brain regions are activated depending on the working memory demands associated with processing a particular grammatical feature. We used functional magnetic resonance imaging (fMRI) to test this hypothesis by comparing cortical activation patterns during coherence judgments of sentences with three different syntactic features. We found activation of the ventral portion of left inferior frontal cortex during judgments of violations of each grammatical feature. Increased recruitment of the dorsal portion of left inferior frontal cortex was seen during judgments of violations of specific grammatical features that appear to involve a more prominent working memory component. Left posterolateral temporal cortex and anterior cingulate were also implicated in judging some of the grammatical features. Our observations are consistent with a large-scale neural network for sentence processing that includes a core set of regions for detecting and repairing several different kinds of grammatical features, and additional regions that appear to participate depending on the working memory demands associated with processing a particular grammatical feature. 相似文献
832.
Drai and Grodzinsky provide a valuable analysis that offers a way of disentangling the effects of Movement and Mood in agrammatic comprehension. However, their mathematical implementation (Beta model) hides theoretically relevant information, i.e., qualitative heterogeneities of performance within the patient sample. This heterogeneity is crucial in the variability debate. 相似文献
833.
We have previously proposed that cortical auditory-vocal networks of the monkey brain can be partly homologized with language networks that participate in the phonological loop. In this paper, we suggest that other linguistic phenomena like semantic and syntactic processing also rely on the activation of transient memory networks, which can be compared to active memory networks in the primate. Consequently, short-term cortical memory ensembles that participate in language processing can be phylogenetically tracked to more simple networks present in the primate brain, which became increasingly complex in hominid evolution. This perspective is discussed in the context of two current interpretations of language origins, the "mirror-system hypothesis" and generativist grammar. 相似文献
834.
We examined the effect of perceptual training on a well-established hemispheric asymmetry in speech processing. Eighteen listeners were trained to use a within-category difference in voice onset time (VOT) to cue talker identity. Successful learners (n=8) showed faster response times for stimuli presented only to the left ear than for those presented only to the right. The development of a left-ear/right-hemisphere advantage for processing a prototypically phonetic cue supports a model of speech perception in which lateralization is driven by functional demands (talker identification vs. phonetic categorization) rather than by acoustic stimulus properties alone. 相似文献
835.
Kent C Lamberts K 《Journal of experimental psychology. Human perception and performance》2006,32(4):920-931
A four-part experiment was carried out to study the relationship between the time course of object-feature perception and the time course of retrieval of object information from memory. The experiment consisted of 2 perceptual matching tasks, and 2 perceptual recognition tasks. In all 4 tasks, participants provided speeded judgments of the identity of 2 objects. A stochastic feature-sampling model was used to estimate the time needed for feature perception and the time needed for retrieval of feature information. No evidence was found for a systematic relationship between perception times and retrieval times for individual features. Indeed, the model applications indicated that retrieval times were constant for different features, whereas perception rates varied across the features. 相似文献
836.
837.
Thioux M Stark DE Klaiman C Schultz RT 《Journal of experimental psychology. Human perception and performance》2006,32(5):1155-1168
Some individuals are able to determine the weekday of a given date in a few seconds (finding for instance that June 12, 1900, was a Tuesday). This ability has fascinated scientists for many years because it is predominantly observed in people with limited intelligence and may appear very early in life. Exceptional visual memory, exceptional concentration abilities, or privileged access to lower levels of information not normally available through introspection have been advanced to explain such phenomena. In the present article, the authors show that a simple cognitive model can explain all aspects of the performance of Donny, a young autistic savant who is possibly the fastest and most accurate calendar prodigy ever described. 相似文献
838.
Floccia C Goslin J Girard F Konopczynski G 《Journal of experimental psychology. Human perception and performance》2006,32(5):1276-1293
The processing costs involved in regional accent normalization were evaluated by measuring differences in lexical decision latencies for targets placed at the end of sentences with different French regional accents. Over a series of 6 experiments, the authors examined the time course of comprehension disruption by manipulating the duration and presentation conditions of accented speech. Taken together, the findings of these experiments indicate that regional accent normalization involves a short-term adjustment mechanism that develops as a certain amount of accented signal is available, resulting in a temporary perturbation in speech processing. 相似文献
839.
In each of two experiments, the comparative instructions in a symbolic comparison task were either varied randomly from trial to trial (mixed blocks) or left constant (pure blocks) within blocks of trials. In the first experiment, every stimulus was compared with every other stimulus. The symbolic distance effect (DE) was enhanced, and the semantic congruity effect (SCE) was significantly larger, when the instructions were randomized than when they were blocked. In a second experiment, each stimulus was paired with only one other stimulus. The SCE was again larger when instructions were randomized than when they were blocked. The enhanced SCE and DE with randomized instructions follow naturally from evidence accrual views of comparative judgments. 相似文献
840.
Bornstein MH Hahn CS Bell C Haynes OM Slater A Golding J Wolke D;ALSPAC Study Team 《Psychological science》2006,17(2):151-158
Children confront the formidable task of assimilating information in the environment and accommodating their cognitive structures to that information. Developmental science is concerned equally with two distinctive features of these processes: children's group mean level of performance through time and the standing of individual children through time. Prevailing opinion since the inception of the mental-measurement movement has been that individual development is unstable-that individual children change unpredictably in their abilities. We report results of a large-scale controlled, multivariate, prospective, microgenetic, 4-year longitudinal study that reveals a statistically significant cascade of species-typical cognitive abilities from infancy to childhood. Infancy is a recognizable starting point of life; we find that to a small but significant degree, infancy also represents a setting point in the life of the individual. 相似文献