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611.
Stephanie Leary 《Inquiry (Oslo, Norway)》2020,63(5):455-474
ABSTRACT The literature surrounding Horgan and Timmons’s Moral Twin Earth scenarios has focused on whether such scenarios present a metasemantic problem for naturalist realists. But in Choosing Normative Concepts, Eklund uses a similar scenario to illuminate a novel, distinctly metaphysical problem for normative realists of both naturalist and non-naturalist stripes. The problem is that it is not clear what (if anything) would suffice for the sort of ardent realist view that normative realists have in mind – the view that reality itself favors certain ways of acting and valuing. Eklund then offers a metasemantic view that he thinks can provide the best solution to this problem. In this reply to Eklund, I argue that Eklund’s treatment of the problem and his solution re-entangle metaphysical and metasemantic issues that ought to be kept separate. I also argue that there is a purely metaphysical solution to the problem at hand, which Eklund’s own solution seems to implicitly rely upon. While these criticisms do not suggest that Eklund’s positive view is false, they do undermine some of the broader lessons that Eklund hopes to draw from the view. 相似文献
612.
613.
Zeynep Soysal 《Philosophy and phenomenological research》2021,103(1):57-76
In this paper, I argue from a metasemantic principle to the existence of analytic sentences. According to the metasemantic principle, an external feature is relevant to determining which concept one expresses with an expression only if one is disposed to treat this feature as relevant. This entails that if one isn’t disposed to treat external features as relevant to determining which concept one expresses, and one still expresses a given concept, then something other than external features must determine that one does. I argue that, in such cases, what determines that one expresses the concept also puts one in a position to know that certain sentences are true—these sentences are thus analytic relative to this determination basis. Finally, I argue that there are such cases: some sentences are analytic relative to what determines that we express certain key concepts, and these sentences include ones that have always been thought to be the best candidates for being analytic, namely, stipulative truths, and first principles of mathematics. 相似文献
614.
阈下语义之间能否进行整合,最近的研究给出了不同的结果。当多个阈下语义词语同时呈现时显示出无意识语义整合效应,但是当序列呈现时没有观察到无意识整合效应。本研究在保留同时呈现方法优点(不同空间呈现位置)的情况下研究了序列呈现的不同汉字词语之间能否产生无意识语义类别关系整合。在实验1中,两个相同或不同类别的词语作为阈下启动刺激先后在两侧呈现,且第一个词语消失后第二词语马上出现,结果显示出无意识语义类别整合效应。实验2延长了两个阈下启动词语之间的时间间隔,结果未发现无意识语义类别整合效应。另外,实验3进一步排除了实验1中第一个启动词语的视觉残留,结果也未观察到显著的无意识语义类别整合效应,说明实验1中观察到的无意识整合效应是视觉残留所致。综合三个实验结果表明,两个阈下词语之间的语义类别一致性关系只有在同时呈现这种特殊条件下才能进行无意识整合加工,说明了短时间维度对于无意识语义关系整合的重要性。 相似文献
615.
As we listen to speech, our ability to understand what was said requires us to retrieve and bind together individual word meanings into a coherent discourse representation. This so‐called semantic unification is a fundamental cognitive skill, and its development relies on the integration of neural activity throughout widely distributed functional brain networks. In this proof‐of‐concept study, we examine, for the first time, how these functional brain networks develop in children. Twenty‐six children (ages 4–17) listened to well‐formed sentences and sentences containing a semantic violation, while EEG was recorded. Children with stronger vocabulary showed N400 effects that were more concentrated to centroparietal electrodes and greater EEG phase synchrony (phase lag index; PLI) between right centroparietal and bilateral frontocentral electrodes in the delta frequency band (1–3 Hz) 1.27–1.53 s after listening to well‐formed sentences compared to sentences containing a semantic violation. These effects related specifically to individual differences in receptive vocabulary, perhaps pointing to greater recruitment of functional brain networks important for top‐down semantic unification with development. Less skilled children showed greater delta phase synchrony for violation sentences 3.41–3.64 s after critical word onset. This later effect was partly driven by individual differences in nonverbal reasoning, perhaps pointing to non‐verbal compensatory processing to extract meaning from speech in children with less developed vocabulary. We suggest that functional brain network communication, as measured by momentary changes in the phase synchrony of EEG oscillations, develops throughout the school years to support language comprehension in different ways depending on children's verbal and nonverbal skill levels. 相似文献
616.
阅读知觉广度通常指阅读者在阅读文本过程中每次注视能获取有用视觉信息的范围。既往的汉语知觉广度的研究一般把单字作为基本的知觉呈现单元,但在某些呈现条件下,此类呈现方式会导致阅读过程中的语义加工的完整性被破坏。本研究采用眼动追踪技术,使用移动窗口范式和中央凹掩蔽范式,使用双字词句作为阅读材料,双字词作为基本的知觉呈现单元,探讨在保证知觉呈现单元语义完整性的基础上大学生的汉语阅读知觉广度。实验一采用移动窗口范式,结果发现,知觉广度范围为注视词左侧1个双字词及右侧1-2个双字词的空间。实验二采用中央凹掩蔽范式,结果验证了实验一的研究结果。该结果表明,在汉语阅读过程中,以双字词为基本的视觉呈现单元,较既往研究中单字为基本呈现单元的情况,更好地保证了阅读中语义的完整性,从而获得了更大的知觉范围。该结果建立于视觉呈现单元的语义完整性的基础上,是对现有的汉语阅读知觉广度理论的完善和扩展。 相似文献
617.
集体未来思考是指想象一个尚未发生的群体事件,其与集体记忆之间存在着复杂的相互作用。目前对集体未来思考的研究发现它的记忆基础更多为语义记忆。而有关集体未来思考的脑机制研究则相对较少,但在遗忘症患者中发现个体未来思考和集体未来思考是可分离的,并且非海马依赖的未来场景构建与集体未来思考可能存在重要联系。未来研究应该注重不同文化背景下的集体未来思考,探讨其产生条件及影响因素,并加强在正常人群中神经机制的研究,以更好地揭示集体未来思考的实质。 相似文献
618.
Sulakshana P. Rao Ranita Nandi Aparna Dutt Narinder Kapur Jennifer M. Harris Jennifer C. Thompson Julie S. Snowden 《Journal of Neuropsychology》2021,15(2):162-185
The Brixton Spatial Anticipation Test is a well-established test of executive function that evaluates the capacity to abstract, follow, and switch rules. There has been remarkably little systematic analysis of Brixton test performance in the prototypical neurodegenerative disorder of the frontal lobes: behavioural variant frontotemporal dementia (bvFTD) or evaluation of the test’s ability to distinguish frontal from temporal lobe degenerative disease. We carried out a quantitative and qualitative analysis of Brixton performance in 76 patients with bvFTD and 34 with semantic dementia (SD) associated with temporal lobe degeneration. The groups were matched for demographic variables and illness duration. The bvFTD group performed significantly more poorly (U = 348, p < .0001, r = .58), 53% of patients scoring in the poor–impaired range compared with 6% of SD patients. Whereas bvFTD patients showed problems in rule acquisition and switching, SD patients did not, despite their impaired conceptual knowledge. Error analysis revealed more frequent perseverative errors in bvFTD, particularly responses unconnected to the stimulus, as well as random responses. Stimulus-bound errors were rare. Within the bvFTD group, there was variation in performance profile, which could not be explained by demographic, neurological, or genetic factors. The findings demonstrate sensitivity and specificity of the Brixton test in identifying frontal lobe degenerative disease and highlight the clinical value of qualitative analysis of test performance. From a theoretical perspective, the findings provide evidence that semantic knowledge and the capacity to acquire rules are dissociable. Moreover, they exemplify the separable functional contributions to executive performance. 相似文献
619.
Simon Gusman 《Journal of the British Society for Phenomenology》2018,49(1):55-70
In this article I argue that Sartre’s notions of nothingness and “negatity” are not, as he presents it, primarily reactions to Hegel and Heidegger. Instead, they are a reaction to an ongoing struggle with Husserl’s notion of intentionality and related notions. I do this by comparing the criticism aimed at Husserl in Sartre’s Being and Nothingness to that presented in his earlier work, The Imagination, where he discusses Husserl more elaborately. Furthermore, I compare his criticism to Husserl’s own criticism of the “doctrine of immanent objects”, in order to show that Sartre’s notion of nothingness is a continuation of Husserl’s criticism, and that he turns Husserl’s own arguments against himself. 相似文献
620.
工作记忆和长时记忆共享记忆系统的信息表征网络, 关系密切。实验采用事件相关电位技术记录长时记忆信息对工作记忆的长时语义启动和工作记忆对相关长时记忆信息的长时语义启动。结果显示:与新项目相比, 学习项(即长时记忆信息)对工作记忆的目标信息产生了明显的行为启动效应, N2潜伏期、波幅和P3潜伏期也表现出明显的神经启动效应, 即, 学习项比新项目的反应时更短、N2和P3的潜伏期更短、N2更正, 但学习对非记忆项的影响不大; 工作记忆对相关的长时记忆信息也产生了神经启动, 表现在类别比较任务中记忆类信息比其他信息(即, 与工作记忆任务中的信息无关的内容)的N400更正。而且, 这种神经启动也会因刺激重复次数的增多而降低:与新项目相比, 学习项会使与之语义类似信息的N400更负。上述两种长时语义启动的存在及其ERPs的神经启动均为长时记忆和工作记忆使用共同信息表征的观点提供了证据支持。证据还表明, 在工作记忆和长时记忆的相互作用中注意是关键的调节因素。 相似文献