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181.
This paper shows how a neural network can model the way people who have acquired knowledge of an artificial grammar in one perceptual domain (e.g., sequences of tones differing in pitch) can apply the knowledge to a quite different perceptual domain (e.g., sequences of letters). It is shown that a version of the Simple Recurrent Network (SRN) can transfer its knowledge of artificial grammars across domains without feedback. The performance of the model is sensitive to at least some of the same variables that affect subjects' performance—for example, the model is responsive to both the grammaticality of test sequences and their similarity to training sequences, to the cover task used during training, and to whether training is on bigrams or larger sequences. 相似文献
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文章试图运用"双重自我"的概念,结合想象现象对一般梦现象进行现象学上的考察,并期望借助考察的结论给清明之梦一个现象学的解释。在文章的最后,还将用梦作比喻,探讨它对超越论现象学的启示。 相似文献
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肌电和皮温生物反馈及其和自我训练结合控制考试焦虑有效性的比较研究 总被引:3,自引:0,他引:3
本文比较了肌电和皮温生物反馈以及反馈与自我训练结合等方法对改善考试焦虑的有效性。采用状态—特质焦虑问卷的状态焦虑分选择48名高考应届考生为实验受试。将这些受试随机分成6组,每组8人,分别为:1.肌电反馈加自我训练;2.单肌电反馈;3.皮温反馈加自我训练;4.单皮温反馈;5.假反馈和 6.延迟训练等组。训练前后分别测试了各位受试在故意制造的紧张气氛中完成测验作业时的肌电和皮温变化以及状态焦虑的水平。比较结果表明:1.生物反馈改善考试焦虑是有效的,皮温和肌电反馈有效性相当;2.生物反馈和自我训练结合效果似乎更佳;3.假反馈训练的效果虽然比不训练略好,但两者无明显的区别;4.初始状态焦虑程度越高,经训练,焦虑水平下降幅度也越大。 相似文献
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Inertia and memory in ambiguous visual perception 总被引:1,自引:0,他引:1
Gao JB Billock VA Merk I Tung WW White KD Harris JG Roychowdhury VP 《Cognitive processing》2006,7(2):105-112
Perceptual multistability during ambiguous visual perception is an important clue to neural dynamics. We examined perceptual switching during ambiguous depth perception using a Necker cube stimulus, and also during binocular rivalry. Analysis of perceptual switching time series using variance–sample size analysis, spectral analysis and time series shuffling shows that switching times behave as a 1/f noise and possess very long range correlations. The long memory feature contrasts sharply with the traditional satiation models of multistability, where the memory is not incorporated, as well as with recently published models of multistability and neural processing, where memory is excluded. On the other hand, the long memory feature favors the concept of “dynamic core” or coalition of neurons, where neurons form transient coalitions. Perceptual switching then corresponds to replacement of one coalition of neurons by another. The inertia and memory measures the stability of a coalition: a strong and stable coalition has to be won over by another similarly strong and stable coalition, resulting in long switching times. The complicated transient dynamics of competing coalitions of neurons may be addressable using a combination of functional imaging, measurement of frequency-tagged magnetoencephalography and frequency-tagged encephalography, simultaneous recordings of groups of neurons in many areas of the brain, and concepts from statistical mechanics and nonlinear dynamics theory. 相似文献
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Against the backdrop of COVID-19 pandemic, we draw on family systems theory to elucidate how daily work-from-home status (WFH) affects both members in dual-earner couples. We propose that the WFH exerts intra-individual and inter-individual influences on employees’ and their partners’ work task and family task completion and their subsequent reactions to their work and family experiences. We examined the hypothesized relationships with two daily survey studies on dual-earner couples conducted during the pandemic (i.e., 1,559 daily responses of 165 dual-earner couples from China in Study 1, and 773 daily responses of 57 dual-earner couples from South Korea in Study 2). The two studies provide converging results that working from home (vs. office) increased employees’ family task completion for both husbands and wives and that wives working from home (vs. office) decreased husbands’ family task completion. Further, in both studies, daily work task completion increased felt guilt toward family (for wives only) through increased work-family conflict, and daily family task completion increased psychological withdrawal from work through increased family-work conflict for both husbands and wives. Moreover, we found in Study 2 that on days when husbands had flexible work schedule, wives completed more work tasks when working from home (vs. office) and that on days when wives had inflexible work arrangement, husbands completed more family tasks when working from home (vs. office). Across the two studies, there were no clear gender-difference patterns in husbands’ and wives’ work and family experiences. 相似文献