Popp C H
Klinik für Diagnostische und Interventionelle Neuroradiologie, Universitätsklinikum des Saarlandes, Kirrberger Str. 1, 66424, Homburg/Saar, Deutschland.
Radiologe. 2013 Jul;53(7):607-12. doi: 10.1007/s00117-013-2479-4.
Functional magnetic resonance imaging (fMRI) using the blood oxygenation level dependent (BOLD) response depicts the neuroanatomical correlates of cognitive processes and contributes to the understanding of memory functions. Working memory utilizes different neuroanatomical areas for temporarily storing and manipulating information content. Visual working memory is mainly considered to be an interaction of the prefrontal cortex which contributes to attention functions, temporal regions which store different object categories and posterior parietal and occipital regions which are sensitive to object number and complexity and possibly also store parts of objects. Expertise leads to the creation of long-term entries that support visual working memory entries. Well-known objects are represented with less neural effort in regions of the visual working memory network than unknown objects.
利用血氧水平依赖(BOLD)反应的功能磁共振成像(fMRI)描绘了认知过程的神经解剖学关联,并有助于理解记忆功能。工作记忆利用不同的神经解剖区域来临时存储和处理信息内容。视觉工作记忆主要被认为是前额叶皮层(其有助于注意力功能)、颞叶区域(存储不同的物体类别)以及顶叶后部和枕叶区域(对物体数量和复杂性敏感且可能还存储物体部分)之间的相互作用。专业知识会导致创建支持视觉工作记忆条目的长期条目。在视觉工作记忆网络区域中,知名物体比未知物体需要更少的神经活动来表征。