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一项关于强化学习后成人大脑皮层激活的功能磁共振成像研究。

An fMRI Study of Adult Brain Cortical Activation Following Intensive Learning.

作者信息

Ahmed-Popova Ferihan, Sivkov Stefan, Topolov Mariyan, Beshkov Asen

机构信息

Department of Anatomy, Histology and Embryology, Faculty of Medicine, Medical University - Plovdiv, Plovdiv, Bulgaria.

Research Institute, Medical University - Plovdiv, Plovdiv, Bulgaria.

出版信息

Front Psychiatry. 2020 Mar 3;11:115. doi: 10.3389/fpsyt.2020.00115. eCollection 2020.

Abstract

Functional imaging techniques, fMRI in particular, has given the possibility to investigate non-invasively the cognitive processes in healthy populations and different disorders concerning neuro-psychiatry, thus unfolding the concepts guiding diagnosis and patient management. Different brain structures seem to support different types of cognitive functions in particular learning and memory thus the neurobiological explanation of the retrieval of information is associated with knowledge of brain plasticity, memory circuits, synaptic neurotransmission and the modulation of glial cells. Consistent with fMRI investigations of memory systems we tested the dependability of a memory paradigm using heterogeneous memory stimuli in order to find the neurobiological basis that correlates with memory task performance. Our study resulted with statistical significant differences in brain activations across the block design contrasts in both occipital and temporal regions in 29 mentally healthy students during a memory paradigm performance after intensive learning. As functional magnetic resonance imaging has become an important and reliable tool for investigation of brain anatomy and its function in health and disease, it becomes clear that further research of neurobiological basis of cognitive and memory domains can clarify different diagnostic prototypes and thus explain the human brain impairments in neuropsychological patients, since these are characterized by various cognitive dysfunctions.

摘要

功能成像技术,尤其是功能磁共振成像(fMRI),使得在健康人群以及与神经精神病学相关的不同疾病中对认知过程进行非侵入性研究成为可能,从而揭示了指导诊断和患者管理的概念。不同的脑结构似乎支持不同类型的认知功能,特别是学习和记忆,因此信息检索的神经生物学解释与脑可塑性、记忆回路、突触神经传递以及神经胶质细胞的调节知识相关。与记忆系统的功能磁共振成像研究一致,我们使用异质记忆刺激测试了一种记忆范式的可靠性,以便找到与记忆任务表现相关的神经生物学基础。在强化学习后的记忆范式表现中,我们的研究结果显示,29名心理健康的学生在枕叶和颞叶区域的组块设计对比中,大脑激活存在统计学上的显著差异。由于功能磁共振成像已成为研究健康和疾病状态下脑解剖结构及其功能的重要且可靠的工具,很明显,对认知和记忆领域神经生物学基础的进一步研究可以阐明不同的诊断原型,从而解释神经心理学患者的人脑损伤,因为这些患者具有各种认知功能障碍。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ba30/7063975/d607eff97020/fpsyt-11-00115-g001.jpg

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