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排序方式: 共有167条查询结果,搜索用时 15 毫秒
81.
从工作记忆刷新功能的训练入手, 以不同人群为研究对象, 采用活动记忆任务, 从行为层面和认知神经层面探讨工作记忆刷新功能的可塑性。结果发现, 工作记忆刷新功能具有可塑性。具体表现为, 通过刷新功能训练, 个体在工作记忆刷新任务上的成绩提高。工作记忆刷新功能训练使得个体对刺激的识别能力增强, 对无关信息的抑制能力提高, 进而促使工作记忆中的更新能力得到提升。通过工作记忆刷新训练可以提高个体其它认知功能, 但是, 相对于认知能力稳定以及衰退的个体, 这种迁移效应在工作记忆能力发展个体中的表现更为明显。 相似文献
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近期的研究发现儿童的工作记忆能力具有一定的可塑性。研究者采用双盲对照实验设计, 通过改编的工作记忆广度、N-back、活动记忆和GO-NOGO等任务对15岁以下的正常儿童和特殊儿童(多动症、智力低下等)的工作记忆能力进行训练, 训练的周期一般为15~30天不等, 每天训练时长约15~25分钟。研究结果发现, 工作记忆训练不仅可以提高儿童的工作记忆能力, 而且还可以迁移至其它高级认知功能(流体智力、数学能力等), 甚至可以改善多动症儿童的临床症状。研究者还发现这种训练效应可以保持3~6个月。通过工作记忆中央执行功能的训练, 是否可以促进儿童认知功能的发展?儿童认知功能的可塑性表现为短暂的提高还是促进认知发展?中央执行功能的训练如何影响儿童认知加工过程的发展?这些问题的回答对于近一步探索认知活动和认知神经的可塑性具有一定的理论意义。可以为工作记忆缺陷儿童的临床干预和治疗提供有效的工具, 具有实践意义。 相似文献
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Brain plasticity and behavior 总被引:2,自引:0,他引:2
Bryan Kolb Robbin Gibb Terry E. Robinson 《Current directions in psychological science》2003,12(1):1-5
Although the brain was once seen as a rather static organ, it is now clear that the organization of brain circuitry is constantly changing as a function of experience. These changes are referred to as brain plasticity, and they are associated with functional changes that include phenomena such as memory, addiction, and recovery of function. Recent research has shown that brain plasticity and behavior can be influenced by a myriad of factors, including both pre- and postnatal experience, drugs, hormones, maturation, aging, diet, disease, and stress. Understanding how these factors influence brain organization and function is important not only for understanding both normal and abnormal behavior, but also for designing treatments for behavioral and psychological disorders ranging from addiction to stroke. 相似文献
84.
DEVELOPMENTAL BIOLOGY,NATURAL SELECTION,AND THE CONCEPTUAL BOUNDARIES OF THE MODERN EVOLUTIONARY SYNTHESIS 下载免费PDF全文
Using the evolution of the stickleback family of subarctic fish as a touchstone, we explore the effect of new discoveries about regulatory genetics, developmental plasticity, and epigenetic inheritance on the conceptual foundations of the Modern Evolutionary Synthesis. Identifying the creativity of natural selection as the hallmark of the Modern Synthesis, we show that since its inception its adherents have pursued a variety of research projects that at first seemed to conflict with its principles, but were accommodated. We situate challenges coming from developmental biology in a dialectic between innovation and tradition, suggesting on the basis of past episodes that even if developmental plasticity and epigenetic inheritance are aligned with its principles the Modern Synthesis (and its image in the public reception of evolution) will be significantly affected. 相似文献
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自发展认知神经科学兴起以来, 研究者就开始借助MRI等脑成像技术探讨儿童青少年认知能力发展与大脑结构发育和功能特点等之间的关系, 这为揭示行为发展与生理成熟之间的关系、儿童认知发展的神经活动规律、正常和障碍群体的独特大脑神经结构及活动特点等提供了重要启示。通过对有关儿童青少年智力、工作记忆、反应抑制等认知能力发展与大脑结构发育、大脑功能发育之间关系, 以及认知能力训练与大脑可塑性等研究的介绍, 指出发展认知神经科学的未来研究应重视采用纵向设计, 关注自然成熟和经验对正常或障碍儿童青少年认知发展与脑发育关系的交互影响, 同时从练习和训练的角度对大脑可塑性的特点进行探讨。 相似文献
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Enhancing the Cognitive Vitality of Older Adults 总被引:1,自引:0,他引:1
Aging is associated with decline in a multitude of cognitive processes and brain functions. However, a growing body of literature suggests that age-related decline in cognition can sometimes be reduced through experience, cognitive training, and other interventions such as fitness training. Research on cognitive training and expertise has suggested that age-related cognitive sparing is often quite narrow, being observed only on tasks and skills similar to those on which individuals have been trained. Furthermore, training and expertise benefits are often realized only after extensive practice with specific training strategies. Like cognitive training, fitness training has narrow effects on cognitive processes, but in the case of fitness training, the most substantial effects are observed for executive-control processes. 相似文献
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