排序方式: 共有99条查询结果,搜索用时 15 毫秒
71.
Mariana Alonso Haydee Viola Ivan Izquierdo Jorge H Medina 《Neurobiology of learning and memory》2002,77(1):119-124
The extracellular signal-regulated kinases (ERKs) family of mitogen-activated protein kinases (MAPKs) has been shown to participate in memory formation. We recently found that a hippocampal ERK/MAPK cascade is required for memory formation of an inhibitory avoidance training in rats. Here we reported that this learning task is accompanied by a rapid increase in the phosphorylation of hippocampal p44 MAPK. A single mild foot shock produced a similar effect and three consecutive foot shocks provoked the activation of both p44 and p42 MAPKs. In contrast, a brief exposure to the training box or the habituation to an open field did not alter hippocampal ERK/MAPK levels. Together, these findings indicate that aversive behavioral experiences induced a rapid and transient activation of ERK/MAPKs in the hippocampus. 相似文献
72.
Amber E. Mendres-Smith John C. Borrero Mariana I. Castillo Barbara J. Davis Jessica L. Becraft Brenda Hussey-Gardner 《Journal of applied behavior analysis》2020,53(4):2090-2107
The American Academy of Pediatrics (AAP) recommends that infants spend supervised time in the prone (tummy) position to foster motor development and prevent cranial deformities. However, infants may not tolerate the position, and consequently, caregivers may avoid placing their infants in the prone position. The AAP recommends that caregivers provide toys or interaction during tummy time. We evaluated the individual and combined effects of a play mat and experimenter interaction on negative vocalizations and head elevation during tummy time—positive effects were limited. Next, we evaluated a parent-led intervention wherein mothers interacted with their infants, using a toy, while lying chest-to-chest. This intervention was associated with a reduction in negative vocalizations and an increase in head elevation for the majority of infants. Additionally, mothers rated the effectiveness of the parent-led intervention more favorably than the experimenter-led intervention, suggesting the effects of the parent-led intervention were also socially valid. 相似文献
73.
Mariana Ortega-Brena 《Sexuality & culture》2009,13(1):17-31
This essay proposes a phenomenological approach to the viewing of Japanese hard-core animation (widely known in the West as
“hentai”), a type of erotica frequently characterized by detailed, unusual and fantastic depictions of sexual activity habitually
intended for sexual arousal. Pertinent instances of Japanese traditions of erotica and visual representation, as well as Japanese
animation and its industry are briefly reviewed. The main theoretical focus is on the experience of viewing such animated
material and is mostly informed by Western notions of pornography and film viewing, particularly Vivian Sobchack’s work on
the phenomenology of film.
相似文献
Mariana Ortega-BrenaEmail: |
74.
The aim of this study was to test whether honeybees develop reward expectations. In our experiment, bees first learned to associate colors with a sugar reward in a setting closely resembling a natural foraging situation. We then evaluated whether and how the sequence of the animals’ experiences with different reward magnitudes changed their later behavior in the absence of reinforcement and within an otherwise similar context. We found that the bees that had experienced increasing reward magnitudes during training assigned more time to flower inspection 24 and 48 h after training. Our design and behavioral measurements allowed us to uncouple the signal learning and the nutritional aspects of foraging from the effects of subjective reward values. We thus found that the animals behaved differently neither because they had more strongly associated the related predicting signals nor because they were fed more or faster. Our results document for the first time that honeybees develop long-term expectations of reward; these expectations can guide their foraging behavior after a relatively long pause and in the absence of reinforcement, and further experiments will aim toward an elucidation of the neural mechanisms involved in this form of learning. 相似文献
75.
76.
Smith JD Redford JS Haas SM Coutinho MV Couchman JJ 《Journal of experimental psychology. Animal behavior processes》2008,34(3):361-374
The authors compared the performance of humans and monkeys in a Same-Different task. They evaluated the hypothesis that for humans the Same-Different concept is qualitative, categorical, and rule-based, so that humans distinguish 0-disparity pairs (i.e., same) from pairs with any discernible disparity (i.e., different); whereas for monkeys the Same-Different concept is quantitative, continuous, and similarity-based, so that monkeys distinguish small-disparity pairs (i.e., similar) from pairs with a large disparity (i.e., dissimilar). The results supported the hypothesis. Monkeys, more than humans, showed a gradual transition from same to different categories and an inclusive criterion for responding Same. The results have implications for comparing Same-Different performances across species--different species may not always construe or perform even identical tasks in the same way. In particular, humans may especially apply qualitative, rule-based frameworks to cognitive tasks like Same-Different. 相似文献
77.
This paper is an attempt at introducing a formal framework for societal, participative, anticipatory, inner‐change oriented and open‐ended ‘’ learning for evolution.” The key point of our approach is that it considers the evolution of a social system not exclusively as an appropriate result of the given system structure, operating and behaving under external constraints; but mainly as an outer (or observable) consequence of some inner changes brought about from within the system of heterogenous actors‐designers in their effort to cope with complexities generated equally by external constraints and by the network of mutual relationships between them. The actors‐designers are thus trying to assess critically the courses the system could possibly take in the future and also to isolate —through a dialogue between them—the so‐called “evolutionary” ones. Consequently, a policy‐oriented approach to “social homcorhesis” is obtained. It opens the way to a participative planning outlook on societal learning. 相似文献
78.
Mariana Karin Falconier Fridtjof Nussbeck Guy Bodenmann 《Anxiety, stress, and coping》2013,26(4):447-466
Abstract This study seeks to validate the Spanish version of the Dyadic Coping Inventory (DCI) in a Latino population with data from 113 heterosexual couples. Results for both partners confirm the factorial structure for the Spanish version (Subscales: Stress Communication, Emotion- and Problem-Focused Supportive, Delegated, and Negative Dyadic Coping, Emotion- and Problem-Focused Common Dyadic Coping, and Evaluation of Dyadic Coping; Aggregated Scales: Dyadic Coping by Oneself and by Partner) and support the discriminant validity of its subscales and the concurrent, and criterion validity of the subscales and aggregated scales. These results do not only indicate that the Spanish version of the DCI can be used reliably as a measure of coping in Spanish-speaking Latino couples, but they also suggest that this group relies on dyadic coping frequently and that this type of coping is associated with positive relationship functioning and individual coping. Limitations and implications are discussed. 相似文献
79.
80.