全文获取类型
收费全文 | 1099篇 |
免费 | 77篇 |
国内免费 | 1篇 |
出版年
2021年 | 8篇 |
2020年 | 17篇 |
2019年 | 23篇 |
2018年 | 33篇 |
2017年 | 37篇 |
2016年 | 35篇 |
2015年 | 31篇 |
2014年 | 28篇 |
2013年 | 134篇 |
2012年 | 63篇 |
2011年 | 31篇 |
2010年 | 31篇 |
2009年 | 20篇 |
2008年 | 38篇 |
2007年 | 48篇 |
2006年 | 40篇 |
2005年 | 36篇 |
2004年 | 25篇 |
2003年 | 37篇 |
2002年 | 42篇 |
2001年 | 21篇 |
2000年 | 20篇 |
1999年 | 18篇 |
1998年 | 12篇 |
1997年 | 15篇 |
1996年 | 9篇 |
1995年 | 11篇 |
1994年 | 8篇 |
1992年 | 9篇 |
1991年 | 10篇 |
1990年 | 15篇 |
1989年 | 9篇 |
1988年 | 11篇 |
1987年 | 11篇 |
1985年 | 11篇 |
1984年 | 14篇 |
1983年 | 7篇 |
1982年 | 10篇 |
1980年 | 12篇 |
1979年 | 19篇 |
1978年 | 13篇 |
1977年 | 12篇 |
1976年 | 15篇 |
1975年 | 11篇 |
1974年 | 14篇 |
1973年 | 8篇 |
1972年 | 10篇 |
1970年 | 10篇 |
1969年 | 12篇 |
1966年 | 7篇 |
排序方式: 共有1177条查询结果,搜索用时 218 毫秒
71.
Visual short-term memory load suppresses temporo-parietal junction activity and induces inattentional blindness 总被引:4,自引:0,他引:4
The right temporo-parietal junction (TPJ) is critical for stimulus-driven attention and visual awareness. Here we show that as the visual short-term memory (VSTM) load of a task increases, activity in this region is increasingly suppressed. Correspondingly, increasing VSTM load impairs the ability of subjects to consciously detect the presence of a novel, unexpected object in the visual field. These results not only demonstrate that VSTM load suppresses TPJ activity and induces inattentional blindness, but also offer a plausible neural mechanism for this perceptual deficit: suppression of the stimulus-driven attentional network. 相似文献
72.
Jay B. Sisun is a Clinical Research Assistant at Taunton State Hospital. Glen A. Eskedal is the Chair and Professor of Education
and Human Services at Suffolk University. Of challenge to developmental psychologists and mental health practitioners is the
management of positive and negative symptoms associated with schizophrenia and their effects on mastering psychosocial developmental
tasks. The intent of this article is to provide specific information pertinent to understanding this disorder, to understand
the age-appropriate struggle for individuation, and to offer recommendations for effective treatment. 相似文献
73.
Electrical activity was recorded from single neurons in the medial prefrontal cortex of rabbits during differential Pavlovian heart rate (HR) conditioning. A heterogeneous population of cells were found, some of which showed CS-evoked increases and others CS-evoked decreases in discharge, while some cells were biphasic. A subset of cells also showed trial-related changes in discharge that were related to acquisition of the HR discrimination between the reinforced CS+ and non-reinforced CS-. Administration of the peripheral cholinergic antagonist, methylscopolamine, and the andrenergic antagonist, atenolol, either increased or decreased maintained baseline activity of many cells, but had little or no effect on the CS-evoked activity of these cells. Waveform changes also did not result from administration of these drugs. This finding suggests that CS-evoked mPFC activity is not being driven by cardiac afferent input to CNS cardiac control centers. Previous studies have shown that ibotenic acid lesions of this area greatly decreases the magnitude of decelerative heart rate conditioned responses; the latter finding, plus the results of the present study, suggest that processing of CS/US contingencies by the prefrontal cortex contributes to the acquisition of autonomic changes during Pavlovian conditioning. 相似文献
74.
75.
How rapidly can attention move from one object to the next? Previous studies in which the dwell time paradigm was used have estimated attentional switch times of 200–500 msec, results incompatible with the search rate estimates of 25–50 msec shown in numerous visual search studies. It has been argued that dwell times are so long in the dwell time paradigm because the attentional shifts measured are unlike those used in visual search. In the present experiment, a variation of a visual search task was used, in which serial endogenous (volitional) deployments of attention were measured directly by means of a probe reaction time task. The experiment revealed a dwell time of about 250 msec, consistent with the faster estimates from other dwell time studies. This result suggests that endogenous shifts of attention may be relatively slow and that the faster attentional shifts estimated from visual search tasks may be due to the involvement of bottom-up processes. 相似文献
76.
The present experiment examined the one-target advantage (OTA) with regard to saccadic eye movements. The OTA, previously found with manual pointing responses, refers to the finding that movements are executed faster when the limb is allowed to stop on the target compared to the situation where it has to proceed and hit a second target. Using an adapted limb movement OTA task, saccades of 5 degrees and 15 degrees were made to (a) a single target (one-target), (b) one target and immediately to another target without a change in direction (two-target-extension), and (c) one target and immediately back to the start location (two-target-reversal). Unlike manual movements, the movement times for the initial saccade in the two-target-extension condition were not prolonged compared to either of the other two conditions. Moreover, this pattern of results was found for both the shorter and longer amplitude saccades. The results indicate that the OTA does not occur in the oculomotor system and therefore is not a general motor control phenomenon. 相似文献
77.
This study examines 7- and 9-month-olds' ability to categorize cats as separate from dogs, and dogs as separate from cats in an object examination task. In Experiment 1, 7- and 9-month-olds (N = 30) familiarized with toy cat replicas were found to form a category of cat that included novel cats but excluded a dog and an eagle. In Experiment 2, 7- and 9-month-olds (N = 30) familiarized with toy dog replicas were found to form a category of dog that included a novel dogs and a novel cat but excluded an eagle. These results mirror those of 3- to 4-month-olds tested with visual preference methods and stand in contrast to previously reported object examination results. Analyses of the distribution of features in the exemplars used to familiarize infants suggest that, like the 3- to 4-month-olds, the 7- and 9-month-olds in these studies form categories within the task, and on the basis of feature distributions. 相似文献
78.
Symbolic control of visual attention: The role of working memory and attentional control settings 总被引:4,自引:0,他引:4
Pratt J Hommel B 《Journal of experimental psychology. Human perception and performance》2003,29(5):835-845
This study examined how 1 symbol is selected to control the allocation of attention when several symbols appear in the visual field. In Experiments 1-3, the critical target feature was color, and it was found that uninformative central arrows that matched the color of the target were selected and produced unintentional shifts of attention (i.e., involuntary, initiated slowly, producing long-lasting facilitatory effects). Experiment 4 tested whether such selection is the result of an attentional filter or of a competition bias due to a match of incoming information against integrated object representations stored in working memory. Here, the critical feature was shape and color was irrelevant, but matching color arrows were still selected. Thus, features of objects in working memory will bias the selection of symbols in the visual field, and such selected symbols are capable of producing unintentional shifts of attention. ((c) 2003 APA, all rights reserved) 相似文献
79.
Serotonin (5-HT) modulates numerous processes in the central nervous system that are relevant to neuropsychiatric function and dysfunction. It exerts significant effects on anxiety, mood, impulsivity, sleep, ingestive behavior, reward systems, and psychosis. Serotonergic dysfunction has been implicated in several psychiatric conditions but efforts to more clearly understand the mechanisms of this influence have been hampered by the complexity of this system at the receptor level. There are at least 14 distinct receptors that mediate the effects of 5-HT as well as several enzymes that control its synthesis and metabolism. Pharmacologic agents that target specific receptors have provided clues regarding the function of these receptors in the human brain. 5-HT is also an important modulator of neural development and several groups have employed a genetic strategy relevant to behavior. Several inactivation mutations of specific 5-HT receptors have been generated producing interesting behavioral phenotypes related to anxiety, depression, drug abuse, psychosis, and cognition. In many cases, knockout mice have been used to confirm what has already been suspected based on pharmacologic studies. In other instances, mutations have demonstrated new functions of serotonergic genes in development and behavior. 相似文献
80.
Miller PN Lawrence RJ Powell RC 《The journal of pastoral care & counseling : JPCC》2003,57(2):111-116
In the current cultural context, clinically trained ministers, lay and ordained, offer themselves to troubled souls through at least three distinct varieties of assistance: pastoral care, pastoral counseling, and pastoral psychotherapy. This essay delineates three accepted disciplines, emphasizing the importance of ascertaining, and perhaps re-evaluating, the particular needs and desires of persons who are in physical, mental, or spiritual distress. "Pastoral care," "pastoral counseling," and "pastoral psychotherapy" each play an important role in fulfilling the traditional mandate for "the cure of souls." 相似文献