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Accumulation of c-fos mRNA in rat hippocampus during acquisition of a brightness discrimination 总被引:11,自引:0,他引:11
W Tischmeyer L Kaczmarek M Strauss R Jork H Matthies 《Behavioral and neural biology》1990,54(2):165-171
Training rats to attain a foot-shock-motivated brightness discrimination in a Y-maze results in an early and transient increase of hippocampal c-fos mRNA levels. Maximal accumulation was observed immediately after training, returning to basal levels during the following 2 h. A similar increase was obtained when rats were subjected to a pseudotraining with an equal number of runs, but with random pairing of the choice of bright and dark alleys with foot shock. It is suggested that induction of hippocampal c-fos mRNA expression is a necessary, but not sufficient, prerequisite for the formation of long-term memory trace. This early gene expression seems rather to correspond to an initial stage induced by complex stimulus presentation of both the training and the pseudotraining procedure. The subsequent late synthesis or processing of target proteins finally contributing to the formation of a permanent trace requires the action of further convergent signals to principal cells, probably mediating reward or emotional influences. 相似文献
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135.
Daniel J. Strauss Alexander L. Francis 《Cognitive, affective & behavioral neuroscience》2017,17(4):809-825
In recent years, there has been increasing interest in studying listening effort. Research on listening effort intersects with the development of active theories of speech perception and contributes to the broader endeavor of understanding speech perception within the context of neuroscientific theories of perception, attention, and effort. Due to the multidisciplinary nature of the problem, researchers vary widely in their precise conceptualization of the catch-all term listening effort. Very recent consensus work stresses the relationship between listening effort and the allocation of cognitive resources, providing a conceptual link to current cognitive neuropsychological theories associating effort with the allocation of selective attention. By linking listening effort to attentional effort, we enable the application of a taxonomy of external and internal attention to the characterization of effortful listening. More specifically, we use a vectorial model to decompose the demand causing listening effort into its mutually orthogonal external and internal components and map the relationship between demanded and exerted effort by means of a resource-limiting term that can represent the influence of motivation as well as vigilance and arousal. Due to its quantitative nature and easy graphical interpretation, this model can be applied to a broad range of problems dealing with listening effort. As such, we conclude that the model provides a good starting point for further research on effortful listening within a more differentiated neuropsychological framework. 相似文献
136.
Strauss E Bielak AA Bunce D Hunter MA Hultsch DF 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2007,14(6):608-630
Within-person variability may be an important indicator of central nervous system compromise. In this study, within-person variability in response speed was examined in community-dwelling older adults, ages 64-92 years, using a new framework that takes into account both the extent (single versus multiple domains affected) and nature (amnestic versus non-amnestic) of the cognitive impairment. Those with multiple domains of impairment were more variable than those who showed an isolated area of impairment, regardless of whether memory was one of the domains affected. Further, for those with difficulties in two or more non-memory domains, increased variability was most evident in more cognitively demanding situations, when individuals had to manipulate information held briefly in mind, switch cognitive set or inhibit an automatic response. Finally, group differentiation was better achieved when within-person variability as opposed to mean speed of performance was considered. 相似文献
137.
Sherman AC Mosier J Leszcz M Burlingame GM Ulman KH Cleary T Simonton S Latif U Hazelton L Strauss B 《International journal of group psychotherapy》2004,54(1):29-82
Group interventions for individuals facing cancer or HIV disease have drawn considerable attention among researchers and clinicians over the past 20 years. There is growing evidence that group services may be helpful, but which interventions are most effective for participants at which phases in the trajectory of disease has been less clear. Moreover, professionals working in different intervention settings (e.g., primary prevention vs. clinical care) and different disease sites (cancer vs. HIV disease) often have little awareness of relevant advances in other fields. Efforts to integrate findings in the literature may accelerate research and advance the standard of clinical care. The current article, the first in a series of four special reports, critically evaluates the efficacy of group interventions led by professional or trained facilitators for individuals confronted by cancer or HIV, across the spectrum of illness from elevated risk through advanced disease. We examine psychosocial and functional outcomes for different interventions directed toward different patient subgroups, trace common themes, highlight limitations, and offer recommendations for further research. 相似文献
138.
Sherman AC Leszcz M Mosier J Burlingame GM Cleary T Ulman KH Simonton S Latif U Strauss B Hazelton L 《International journal of group psychotherapy》2004,54(2):203-233
There has been great interest in the potential impact of group interventions on medical outcomes. This article reviews the effects of professionally-led groups on immune activity, neuroendocrine function, and survival among patients with cancer or HIV disease. We examine findings concerning different types of group services at different phases of illness. Results are mixed, but the most prominent changes in immune and endocrine activity were associated with structured group interventions for patients with early-stage disease. These findings offer provocative illustrations of relevant mind-body interactions, but their clinical importance has yet to be demonstrated empirically. Group interventions have not been tied consistently to improved survival rates for patients with advanced cancer; few studies as yet have focused on survival outcomes among patients with early-stage cancer or HIV disease. 相似文献
139.
Sherman AC Mosier J Leszcz M Burlingame GM Ulman KH Cleary T Simonton S Latif U Hazelton L Strauss B 《International journal of group psychotherapy》2004,54(3):347-387
Growing evidence supports the value of group interventions for individuals who are at risk for or have developed cancer or HIV disease. However, information is more limited concerning how these services can be delivered in an optimal manner, and what processes contribute to their benefits. Parts I and II of this review examined the efficacy of different interventions for individuals at different phases of illness, ranging from primary prevention to late-stage disease, in both psychosocial and biological domains. The current paper examines some of the factors other than phase of illness that might influence group treatment effects (e.g., intervention parameters, participant characteristics), and explores mechanisms of action. 相似文献
140.
Troyer AK Leach L Strauss E 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2006,13(1):20-35
Increased difficulty with response inhibition occurs with age, although there is some controversy as to whether increased interference on Stroop tasks reflects difficulties with response inhibition or simply reflects generalized cognitive slowing. The Victoria Stroop Test (VST) is a brief, easily administered, psychometrically sound version of Stroop's original task. Performance on the VST by adults across a wide age span was examined to determine the association between age and various measures of interference. In addition, normative data for the VST were calculated. Participants were 272 healthy, community-dwelling adults age 18 to 94. Age and speed were negatively correlated on all trials of the VST. Importantly, however, interference scores that were corrected for baseline slowing remained highly correlated with age. Similarly, age and error scores on the interference trial were positively correlated, indicating decreased accuracy with age. These findings suggest that increased interference on Stroop tasks with age is not accounted for by simple cognitive slowing and more likely reflects other cognitive changes, such as decreased response inhibition. The VST has a number of administrative and psychometric strengths, and the provision of normative data should enhance its potential for clinical and research applications. 相似文献