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851.
汉字视听再认的ERP效应与记忆提取脑机制   总被引:13,自引:1,他引:12  
测定了正常青年人汉字再认的事件相关电位(ERP)。观察到对听觉汉字的认知产生“持续中央负成分”,而视觉汉字的认知出现“晚期正成分”,提示汉字的视听认知具有不同的脑机制。汉字视听认知皆出现了新旧效应,即旧词皆引起ERP晚期成分的正走向变化,但视听新旧效应的起始时间与头皮分布不同,听觉效应为右半球优势,视觉效应则出现在左侧顶叶、左侧颞叶后部与右侧枕叶。以上实验结果提示,“优势半球”概念已难以概括半球间的多维动态关系,需要修正。  相似文献   
852.
The first aim of this study was to provide further evidence regarding the effects of short retention training (RCT) on the treatment of enuresis. A second aim was to examine the effectiveness of adding specific and differential contingencies for wet and dry beds (DCDWB) when children's bladder size had acquired the capacity of normals. Two enuretic boys, aged 11-12 years, participated in this study. An ABC design with 4 months follow-up was used. The RCT consisted of required drinking, practice in urine retention and exercises to increase control over actual urine flow. The DCDWB involved the addition of either a unique period of over correction or reinforcing consequences when having a wet or dry bed in the morning. Results with RCT alone replicated previous studies. RCT is an effective method for normalizing enuretic bladder capacity, but not sufficient for eliminating enuresis, entirely. However, enuresis was totally eliminated when specific and explicit contingencies were implemented. All the components were faded out. Three months after the last intervention, follow-up data were collected for a period of 1 month. No subject relapsed. The implications of these findings are discussed.  相似文献   
853.
The current study examined the influence of maternal characteristics on the development of infant smiling and laughter, a marker of early positive emotionality (PE) and how maternal characteristics and the development of infant PE contributed to subsequent maternal parenting. One hundred fifty‐nine mothers with 4‐month‐old infants participated. Maternal characteristics were assessed 4 months postpartum, infant smiling and laughter were assessed at 4, 6, 8, 10 and 12 months postpartum, and maternal negative parenting was assessed 18 months postpartum. Latent growth modelling was used to test hypotheses regarding the influence of maternal characteristics on the development of infant smiling and laughter, and the contribution of infant smiling and laughter to later maternal parenting. Higher maternal effortful control and PE predicted more initial infant smiling and laughter, whereas more maternal parenting stress predicted lower slopes of infant smiling and laughter. More frequent/intense symptoms of maternal depression predicted higher scores on a measure of negative parenting, whereas higher maternal PE and better effortful control predicted lower negative parenting scores. After accounting for maternal characteristics, higher intercepts and slopes of infant smiling and laughter predicted fewer reports of negative parenting practices. The implications of these findings for future research are discussed. Copyright © 2013 John Wiley & Sons, Ltd.  相似文献   
854.
Certain patients overwhelm the analyst's capacity to contain both the patient and the analyst's own unbearable feelings. Though some such failures of containing may lead fairly quickly to self‐correction and others to clinical impasse, our focus is on an in‐between state in which the analyst's ability to tolerate his inevitable failures and gradually to (re)establish his containing capacities through difficult self‐analytic work can lead to significant change that might not otherwise be possible. The authors argue that this internal psychological work on the analyst's part, which may require considerable time, effort, and suffering, is an important aspect of “good enough” containing. The unique chemistry generated between patient and analyst plays an important role in both establishing and maintaining this kind of productive analytic process.  相似文献   
855.
There is substantial evidence to indicate that negative emotion can modulate cognitive control processing. However, only a few studies have investigated this effect with positive emotion. Therefore, the present study explored the electrophysiological correlates of the impact of positive emotional stimuli on cognitive control, using event‐related potentials (ERPs). Sixteen healthy young adults completed a modified Simon task (Simon, 1969). Behavioral data indicated that reaction times were faster for positive emotional stimuli than for neutral emotional stimuli in the incongruent condition, but not in the congruent condition, which suggested that positive emotion expedited conflict resolution. The ERP data showed that two negative ERP components (N300–400 and N450–550) were associated with the positive emotional stimuli in the incongruent minus congruent condition. It is suggested that these components may respectively be related to the conflict monitoring (N300–400) and response selection (N450–550) stages of cognitive control processing. Overall, our results indicated that positive emotion could facilitate cognitive control processing. These results are in line with the neuropsychological theory, according to which, positive emotion could modulate cognitive control mediated by increased dopamine levels in frontal brain areas.  相似文献   
856.
Belief bias is the tendency to accept conclusions that are compatible with existing beliefs more frequently than those that contradict beliefs. It is one of the most replicated behavioral findings in the reasoning literature. Recently, neuroimaging studies using functional magnetic resonance imaging (fMRI) and event‐related potentials (ERPs) have provided a new perspective and have demonstrated neural correlates of belief bias that have been viewed as supportive of dual‐process theories of belief bias. However, fMRI studies have tended to focus on conclusion processing, while ERPs studies have been concerned with the processing of premises. In the present research, the electrophysiological correlates of cognitive control were studied among 12 subjects using high‐density ERPs. The analysis was focused on the conclusion presentation phase and was limited to normatively sanctioned responses to valid–believable and valid–unbelievable problems. Results showed that when participants gave normatively sanctioned responses to problems where belief and logic conflicted, a more positive ERP deflection was elicited than for normatively sanctioned responses to nonconflict problems. This was observed from ?400 to ?200 ms prior to the correct response being given. The positive component is argued to be analogous to the late positive component (LPC) involved in cognitive control processes. This is consistent with the inhibition of empirically anomalous information when conclusions are unbelievable. These data are important in elucidating the neural correlates of belief bias by providing evidence for electrophysiological correlates of conflict resolution during conclusion processing. Moreover, they are supportive of dual‐process theories of belief bias that propose conflict detection and resolution processes as central to the explanation of belief bias.  相似文献   
857.
本研究采用纵向设计,对170名儿童(实验组:101人;对照组:69人)进行为期两学年的追踪,旨在探讨书法练习对儿童情绪状态及认知性情绪调节策略发展的影响。研究发现,1)以前测成绩为协变量,后测时实验组的积极情绪显著高于对照组;2)实验组在“积极重新关注”、“计划”两维度上的情绪调节策略得分增量(后测-前测)显著高于对照组。结果表明,书法练习对儿童情绪及其调节策略发展具有促进作用。  相似文献   
858.
The purpose of this study was to examine resilience, as the ability to bounce back from stress, in predicting health-related measures when controlling for other positive characteristics and resources. We assessed resilience, optimism, social support, mood clarity, spirituality, purpose in life, and health-related measures in two large undergraduate samples. In Study 1, resilience was related to both health-related measures (less negative affect and more positive affect) when controlling for demographics and other positive characteristics. In Study 2, resilience was related to all four health-related measures (less negative affect, more positive affect, less physical symptoms, and less perceived stress) when controlling for the other variables. None of the other positive characteristics were related to more than three of the six possible health-related measures when controlling for the other variables. Resilience, as the ability to bounce back, may be an important personal resource to examine in future studies and target in interventions.  相似文献   
859.
A number of positive psychology interventions have successfully helped people learn skills for improving mood and building personal resources (e.g., psychological resilience and social support). However, little is known about whether intervention activities remain effective in the long term, or whether new resources are maintained after the intervention ends. We address these issues in a 15-month follow-up survey of participants from a loving-kindness meditation intervention. Many participants continued to practice meditation, and they reported more positive emotions (PEs) than those who had stopped meditating or had never meditated. All participants maintained gains in resources made during the initial intervention, whether or not they continued meditating. Continuing meditators did not differ on resources at baseline, but they did show more PE and a more rapid PE response to the intervention. Overall, our results suggest that positive psychology interventions are not just efficacious but of significant value in participants’ real lives.  相似文献   
860.
The aim of this two-wave questionnaire study with a 4-week interval among 391 Dutch university students was to test a gain cycle of positive emotions, personal resources, and study engagement. As a theoretical basis, this study drew on the broaden-and-build (B&B) theory and the conservation of resources (COR) theory. More specifically, it was hypothesized that the experience of positive emotions predicts students’ future personal resources and study engagement. Moreover, it was expected that there is a longitudinal relationship between personal resources and study engagement. Furthermore, we hypothesized that positive emotions, personal resources, and study engagement are reciprocally related. Results, obtained by means of structural equation modeling, confirmed both causal (except for the positive relationship between positive emotions and study engagement) and reciprocal hypotheses, thereby successfully integrating the B&B theory with the COR theory.  相似文献   
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