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211.
Pairs of homotopic and heterotopic visual bilateral stimuli and pairs of unilateral visual stimuli were presented to 12 normal right-handed university students requiring a key press if they were of the same form. As predicted from the known histology of the corpus callosum (massive preponderance of homotopic fibers), homotopic presentations yielded significantly faster reaction times than heterotopic stimulations. Bilateral pairs of stimuli were also advantaged in comparison with unilateral trials, replicating Sereno and Kosslyn [Sereno, A. B., & Kosslyn, S. M. (1991). Discrimination within and between hemifields: a new constraint on theories of attention. Neuropsychologia, 29, 659-675]. Moreover, certain attentional processes have never been investigated in the Dimond paradigm and this study provides evidence to the effect that discriminative reaction times to stimulus pairs are strongly influenced by their proximity to the fixation point. In similar previous experiments, the homotopy/heterotopy observation and the bilateral field advantage may have been distorted by that particular confound, as well as several others. 相似文献
212.
Claude Barbre 《Journal of religion and health》2001,40(1):41-60
The impact of philosophical wisdom on the pioneers of psychoanalytic work is presented in this article, in particular the influence of Schiller's aesthetics on the theoretical and clinical work of Otto Rank. The essay will compare and contrast Schiller's major themes—in particular his notions of the aesthetic impulse, will, and his concept of harmonia—with aspects of Rank's contributions, namely, his notions of creativity and the art of living. Drawing from Schiller's aesthetic vision, Rank's notion that art and play are foundational sources for healing is described in the author's own clinical work. 相似文献
213.
Brain topographical studies of normal men have have shown that sexual excitation is asymmetric in the brain hemispheres. Group studies of patients with unilateral epileptic foci and other studies of patients with unilateral brain lesions have come to the same conclusion. The present study reviewed previously published single case reports of patients with frank hypo or hypersexuality subsequent to a unilateral brain lesion. Hyposexual patients tended to have left hemisphere lesions (primarily of the temporal lobe), and hypersexual patients tended to have right hemisphere lesions (primarily of the temporal lobe) (p < 0.05). We interpret this double dissociation as part of a more general phenomenon of psychic tone similarly dissociated with regard to hemispheric control, including mood, psychomotor baseline, speech rate, and even immunity. The behavioral significance of this psychic tone is to modulate approach versus avoidance behavior. 相似文献
214.
In a previous study, we showed that (-)-9-dehydrogalanthaminium bromide, a synthetic galanthamine derivative, was more potent than galanthamine in inhibiting acetylcholinesterase. We studied here the action of this new compound on recognition memory in young and old rats, using a two-trial recognition task designed to test both place and object recognition. (-)-9-dehydrogalanthaminium bromide was injected (0.3, 1, and 3 mg/kg, i.p.) in young and old rats before the acquisition phase, immediately after it, or before the retrieval phase of the task, in order to determine the stage of information processing affected by the compound. (-)-9-dehydrogalanthaminium bromide improved both place and object recognition in young rats, via an enhancement of acquisition (3 mg/kg: place recognition; 1 and 3 mg/kg: object recognition) and consolidation (1 and 3 mg/kg) information processing. In old rats, (-)-9-dehydrogalanthaminium bromide improved performance by acting on the acquisition processes of place (0.3, 1, and 3 mg/kg) and object (1 and 3 mg/kg) recognition. These results provide information on the profile of activity of (-)-9-dehydrogalanthaminium bromide on memory processes, and suggest that this new compound could have utility in the treatment of cognitive dysfunction occurring in Alzheimer's disease or in the normal course of aging. 相似文献
215.
Domestic cats (Felis cans) were administered a progressive elimination task in which they had to visit and deplete 3 baited sites. Cats were brought back to the starting point after each visit to any site whether the visit represented a correct or an incorrect choice. The results revealed that cats organized search as a function of the least distance principle whether they had to assess starting point to target distances (Experiment 1, n = 12) or adjacent bowl distances (Experiment 2, n = 12). The results also revealed that the starting point to target distance factor was the most influential in determining the initial choice (Experiment 3, n = 6) and in producing errors. Errors were also linked to the antero-posterior bodily axis of the cat. Results are discussed in terms of the predatory behavior of the cat. 相似文献
216.
Two experiments explored the duration of dogs' working memory in an object permanence task: a delay was introduced between
the disappearance of a moving object behind a box and the beginning of the search by the animal. In experiment 1, the dogs
were tested with retention intervals of 0, 10, 30, and 60 s. Results revealed that the dogs' accuracy declined as a function
of the length of the retention interval but remained above chance for each retention interval. In experiment 2, with new subjects,
longer retention intervals (0, 30, 60, 120, and 240 s) were presented to the dogs. Results replicated findings from experiment 1
and revealed that the dogs' accuracy remained higher than chance level with delays up to 240 s. In both experiments, the analysis
of errors also showed that the dogs searched as a function of the proximity of the target box and were not subject to intertrial
proactive interference. In the discussion, we explore different alternatives to explain why dogs' search behaviour for hidden
objects decreased as a function of the retention intervals.
Electronic Publication 相似文献
217.
Frederick A. Drobin Claude Barbre Ann Belford Ulanov Felicity Brock Kelcourse M.Min. M.Phil. Raymond J. Lawrence Jr Patrick Minges M.Div. Kathryn Madden MA Donald F. Dal Maso C.S.W. Jill Carlen Kirby M.S. C.S.W. Curtis W. Hart Budd H. Kopman Stephen Harding M.Div. Barry Ulanov 《Journal of religion and health》1995,34(2):149-167
218.
Felicity Brock Kelcourse Ann Belford Ulanov Robert W. Gunn Daniel Liechty Claude Barbre Curtis W. Hart Steven Anthony Sola Elisabeth M. Smith Paul C. Cooper Mark J. Hanson Bruce G. Epperly Irwin B. Blatt Jill Carlen Barbre Henry Grayson Barry Ulanov 《Journal of religion and health》1998,37(3):273-296
219.
220.
Piéron (1914, 1920, 1952) demonstrated that simple reaction time decays as a hyperbolic function of luminance. Similarities between cell latencies and reaction time (RT) to luminance suggest that this relationship may be determined by retinal processes. If the exponent of the Piéron function is specific to a given sensory modality, as assumed by some authors (e.g., Bonnet, 1992a, 1992b; Norwich, 1987), it should reflect receptor activities. Consequently, functions with different exponents should fit data for different luminance ranges. In a contrast-discrimination experiment, we investigated this question with a large range of luminance levels in a two-alternative spatial forced-choice task. The results of the experiment show that three functions with different exponents fit RT to the three luminance ranges (scotopic, mesopic, and photopic). The exponent decreases with increasing luminance. The findings indicate that the exponent and the asymptotic latency of the RT function reflect receptor activities of the visual system. 相似文献