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341.
Utilizing a cultural-developmental approach, this interview study examined how children, adolescents, and adults from religiously liberal and conservative groups conceptualize God and the Devil. Participants ( N = 120) conceptualized God and the Devil along similar dimensions, including number (e.g., one, many), gender, central attributes (e.g., physical, supernatural), and evaluation (e.g., positive, neutral). Within-subject differentiations of God and the Devil occurred on all dimensions. Religiously liberal and conservative groups differed on attributes, evaluations, and degree of control ascribed to God and the Devil. With respect to age, results suggest a rethinking of the Piagetian interpretation that children's conceptions of supernatural entities are more concrete, more anthropomorphic, and less abstract than those of adolescents and adults. The results instead point to the usefulness of a cultural-developmental approach.  相似文献   
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The paper takes as its starting point Donna Haraway’s suggestion, “The actors are cyborg, nature is coyote, and the geography is elsewhere”. It discusses first the understanding of the cyborg promoted by Haraway as illustrating an ontological non-humanist disposition, rather than a periodizing claim. The second part of the paper examines some instances of low-tech cyborg identities, which have emerged in developing countries (elsewhere) as a consequence of development initiatives. The paper argues that the quite literal attempts to develop cyborgs in such countries gives rise to developments not foreseen or controllable by the development industries. If cyborg identities are developing and minds and bodies shaped in the frictions between culture, technology, economy, and development projects and activities then what are the implications for cognitive studies. In the final part of the paper this question is considered and it is suggested that cognitive studies would do well to expand their analytical foci to take into account cyborg bodies and minds found “elsewhere”.
Casper Bruun JensenEmail:
  相似文献   
344.
An influential hypothesis regarding the neural basis of the mental lexicon is that semantic representations are neurally implemented as distributed networks carrying sensory, motor and/or more abstract functional information. This work investigates whether the semantic properties of words partly determine the topography of such networks. Subjects performed a visual lexical decision task while their EEG was recorded. We compared the EEG responses to nouns with either visual semantic properties (VIS, referring to colors and shapes) or with auditory semantic properties (AUD, referring to sounds). A time-frequency analysis of the EEG revealed power increases in the theta (4-7Hz) and lower-beta (13-18Hz) frequency bands, and an early power increase and subsequent decrease for the alpha (8-12Hz) band. In the theta band we observed a double dissociation: temporal electrodes showed larger theta power increases in the AUD condition, while occipital leads showed larger theta responses in the VIS condition. The results support the notion that semantic representations are stored in functional networks with a topography that reflects the semantic properties of the stored items, and provide further evidence that oscillatory brain dynamics in the theta frequency range are functionally related to the retrieval of lexical semantic information.  相似文献   
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Childhood poverty has been associated with structural and functional alterations in the developing brain. However, poverty does not alter brain development directly, but acts through associated biological or psychosocial risk factors (e.g. malnutrition, family conflict). Yet few studies have investigated risk factors in the context of infant neurodevelopment, and none have done so in low‐resource settings such as Bangladesh, where children are exposed to multiple, severe biological and psychosocial hazards. In this feasibility and pilot study, usable resting‐state fMRI data were acquired in infants from extremely poor (n = 16) and (relatively) more affluent (n = 16) families in Dhaka, Bangladesh. Whole‐brain intrinsic functional connectivity (iFC) was estimated using bilateral seeds in the amygdala, where iFC has shown susceptibility to early life stress, and in sensory areas, which have exhibited less susceptibility to early life hazards. Biological and psychosocial risk factors were examined for associations with iFC. Three resting‐state networks were identified in within‐group brain maps: medial temporal/striatal, visual, and auditory networks. Infants from extremely poor families compared with those from more affluent families exhibited greater (i.e. less negative) iFC in precuneus for amygdala seeds; however, no group differences in iFC were observed for sensory area seeds. Height‐for‐age, a proxy for malnutrition/infection, was not associated with amygdala/precuneus iFC, whereas prenatal family conflict was positively correlated. Findings suggest that it is feasible to conduct infant fMRI studies in low‐resource settings. Challenges and practical steps for successful implementations are discussed.  相似文献   
347.
Spaced learning with time to consolidate leads to more stabile memory traces. However, little is known about the neural correlates of trace stabilization, especially in humans. The present fMRI study contrasted retrieval activity of two well-learned sets of face-location associations, one learned in a massed style and tested on the day of learning (i.e., labile condition) and another learned in a spaced scheme over the course of one week (i.e., stabilized condition). Both sets of associations were retrieved equally well, but the retrieval of stabilized association was faster and accompanied by large-scale changes in the network supporting retrieval. Cued recall of stabilized as compared with labile associations was accompanied by increased activity in the precuneus, the ventromedial prefrontal cortex, the bilateral temporal pole, and left temporo–parietal junction. Conversely, memory representational areas such as the fusiform gyrus for faces and the posterior parietal cortex for locations did not change their activity with stabilization. The changes in activation in the precuneus, which also showed increased connectivity with the fusiform area, are likely to be related to the spatial nature of our task. The activation increase in the ventromedial prefrontal cortex, on the other hand, might reflect a general function in stabilized memory retrieval. This area might succeed the hippocampus in linking distributed neocortical representations.  相似文献   
348.
Cross-frequency coupling between neuronal oscillations   总被引:7,自引:0,他引:7  
Electrophysiological recordings in animals, including humans, are modulated by oscillatory activities in several frequency bands. Little is known about how oscillations in various frequency bands interact. Recent findings from the human neocortex show that the power of fast gamma oscillations (30-150Hz) is modulated by the phase of slower theta oscillations (5-8Hz). Given that this coupling reflects a specific interplay between large ensembles of neurons, it is likely to have profound implications for neuronal processing.  相似文献   
349.
  • Writing is a core scholarly competence. Not only is it a skill that every academic must acquire, regardless of their methodological, philosophical or empirical affiliations, but also it is ‘a substantial differentiating characteristic of eminent researchers’. This article offers an analysis of the writing style of one of the field's most eminent researchers, Russell W. Belk. It identifies five literary devices that help Belk's writing stand out from the crowd and, while the article does not claim to contain the secret of writing success, it considers the crucial part writing plays in the consumer research process.
Copyright © 2007 John Wiley & Sons, Ltd.  相似文献   
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