A resource model of the neural basis of executive working memory
A resource model of the neural basis of executive working memory
复制标题
DOI：
10.1073/pnas.050583797
复制
发表时间：
2000-03-28
影响因子：
11.1
通讯作者：
Gabrieli, JDE
中科院分区：
文献类型：
--
作者：
Bunge, SA;Klingberg, T;Gabrieli, JDE
工作记忆（WM）是指目标相关信息的临时存储和处理。 WM 被认为包括特定领域的短期记忆存储和执行过程，例如对 WM 内容进行操作的协调。为了检查协调的神经基础，我们获取了功能磁共振成像数据，同时受试者进行了专门设计用于测量执行 WM 的 WM 跨度测试。受试者单独或同时执行两项任务（句子阅读和五个单词的短期记忆），双任务执行比单独执行任一任务更大程度地激活额叶区域，但除了任一组成任务激活的区域外，没有新的区域被激活。这些发现支持额叶中 WM 执行过程的资源理论。
Working memory (WM) refers to the temporary storage and processing of goal-relevant information. WM is thought to include domain-specific short-term memory stores and executive processes, such as coordination, that operate on the contents of WM. To examine the neural substrates of coordination, we acquired functional magnetic resonance imaging data while subjects performed a WM span test designed specifically to measure executive WM. Subjects performed two tasks (sentence reading and shortterm memory for five words) either separately or concurrently, Dual-task performance activated frontal-lobe areas to a greater extent than performance of either task in isolation, but no new area was activated beyond those activated by either component task, These findings support a resource theory of WM executive processes in the frontal lobes.