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91.
92.
从语言到思想:基于指称问题考察分析哲学的范式转移 总被引:1,自引:0,他引:1
本文通过追溯当代内容理论的语言哲学和现象学起源,以指称性概念和意向性概念为核心,简要刻画了指称理论和内容理论的发展线索。在此基础上,本文试图借助语言指称问题和心理指称问题的平行关系,为当代分析哲学的主流从语言哲学到心灵哲学的范式转移的动机和方法勾勒出一个考察纲要。 相似文献
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通过文献综述、理论分析、个别访谈和开放式问卷调查,编制了农民工感恩问卷初卷,对671名江苏苏南地区农民工进行施测,进行项目分析、探索性因素分析、验证性因素分析及信效度检验,并使用该问卷进行初步调查。结果发现:(1)最终形成16个题目的农民工感恩问卷,问卷包含频度方面、密度方面、广度方面三个因子,方差累积贡献率为52.06%;验证性因素分析表明模型拟合得较好;问卷内部一致性系数为0.84;该问卷具有良好的信、效度,可以作为农民工感恩水平的有效测量工具。(2)农民工的整体感恩状况良好,农民工的感恩水平存在性别 相似文献
95.
Attention and cognitive control networks assessed in a dichotic listening fMRI study 总被引:1,自引:0,他引:1
A meaningful interaction with our environment relies on the ability to focus on relevant sensory input and to ignore irrelevant information, i.e. top-down control and attention processes are employed to select from competing stimuli following internal goals. In this, the demands for the recruitment of top-down control processes depend on the relative perceptual salience of the competing stimuli. In the present functional magnetic resonance imaging (fMRI) study, we investigated the recruitment of top-down control processes in response to varying degrees of control demands in the auditory modality. For this purpose, we tested 20 male and 20 female subjects with a dichotic listening paradigm, in which the relative perceptual salience of two simultaneously presented stimuli was systematically manipulated by varying the inter-aural intensity difference (IID) and asking the subjects to selectively attend to either ear. The analysis showed that the interaction between IID and attentional direction involves two networks in the brain. A fronto-parietal network, including the pre-supplementary motor area, anterior cingulate cortex, inferior frontal junction, insula and inferior parietal lobe, was recruited during cognitively demanding conditions and can thus be seen as a top-down cognitive control network. In contrast, a second network including the superior temporal and the post-central gyri was engaged under conditions with low cognitive control demands. These findings demonstrate how cognitive control is achieved through the interplay of distinct brain networks, with their differential engagement determined as a function of the level of competition between the sensory stimuli. 相似文献
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Deschaux O Motanis H Spennato G Moreau JL Garcia R 《Neurobiology of learning and memory》2011,95(4):510-518
Post-extinction exposure of rats to a sub-conditioning procedure can evoke conditioned fear, which may correspond to fear return and/or fear learning potentiation. The aim of the present study was to clarify this issue and examine the effects of tetanic stimulation of the hippocampus (HPC) and medial prefrontal cortex (mPFC), two brain regions implicated in post-extinction modulation of conditioned fear. Rats were initially submitted to five tone-shock pairings with either a 0.7-mA or 0.1-mA shock. Tone-evoked freezing was observed only with the higher shock intensity, indicating that the 0.1-mA shock corresponded to a sub-conditioning procedure. All conditioned rats underwent fear extinction with 20 tone-alone trials. When retrained with the sub-conditioning procedure, they displayed again tone-evoked freezing, except when the initial tone was unpaired or a new tone was paired with the 0.1-mA shock, demonstrating fear return rather than fear learning potentiation. We also found that HPC and mPFC tetanic stimulations, applied 24h after the sub-conditioning procedure, similarly reduced this fear return. However, mPFC inactivation abolished temporary HPC tetanus effect, whereas HPC inactivation did not interfere with mPFC tetanus effect. These data confirm our previous findings and reveal the nature of HPC-mPFC interactions in post-extinction modulation of conditioned fear. 相似文献
98.
通过整群抽样的方法抽取了1404名中学生,对其施测核心自我评价量表,我的班级问卷和抑郁问卷,应用无约束结构方程模型技术和结构方程中介效应检验技术,分别考察了核心自我评价在班级环境与抑郁关系间的调节与中介作用。结果表明:(1)核心自我评价对班级环境中的师生关系、同学关系、竞争三者和抑郁之间的关系起着调节作用,但结构模型的拟合指数不佳;(2)核心自我评价在班级环境与青少年抑郁间起着中介作用,其中核心自我评价在竞争与抑郁间关系起着完全中介作用。 相似文献
99.
Asplund CL Todd JJ Snyder AP Gilbert CM Marois R 《Journal of experimental psychology. Human perception and performance》2010,36(6):1372-1381
The cost of attending to a visual event can be the failure to consciously detect other events. This processing limitation is well illustrated by the attentional blink paradigm, in which searching for and attending to a target presented in a rapid serial visual presentation stream of distractors can impair one's ability to detect a second target presented soon thereafter. The attentional blink critically depends on 'top-down' attentional settings, for it does not occur if participants are asked to ignore the first target. Here we show that 'bottom-up' attention can also lead to a profound but ephemeral deficit in conscious perception: Presentation of a novel, unexpected, and task-irrelevant stimulus virtually abolishes conscious detection of a target presented within half a second after the 'Surprise' stimulus, but only for its earliest occurrences (generally 1 to 2 presentations). This powerful but short-lived deficit contrasts with a milder but more enduring form of attentional capture that accompanies singleton presentations in rapid serial visual presentations. We conclude that the capture of stimulus-driven attention alone can limit explicit perception. 相似文献
100.
Recent investigations of early psychological understanding have revealed three key findings. First, young infants attribute goals and dispositions to any entity they perceive as an agent, whether human or non-human. Second, when interpreting an agent's actions in a scene, young infants take into account the agent's representation of the scene, even if this representation is less complete than their own. Third, at least by the second year of life, infants recognize that agents can hold false beliefs about a scene. Together, these findings support a system-based, mentalistic account of early psychological reasoning. 相似文献