Lowe M J, Dzemidzic M, Lurito J T, Mathews V P, Phillips M D
Department of Radiology, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Neuroimage. 2000 Nov;12(5):582-7. doi: 10.1006/nimg.2000.0654.
Cross-correlation of low-frequency temporal fluctuations (<0.08 Hz) was used to correlate widely separated anatomic regions during continuous performance of a spatial working memory task. The regions of highest correlation to right-hemisphere dorsolateral prefrontal cortex correspond to the regions of largest baseline signal change in a conventional block-style functional MRI paradigm. Additionally, it is shown that the correlations between elements of the functional network increase during performance of a task that activates the network when compared to a task that does not directly stimulate the functionally connected network.
在空间工作记忆任务的持续执行过程中，使用低频时间波动（<0.08 Hz）的互相关来关联广泛分离的解剖区域。与右半球背外侧前额叶皮层相关性最高的区域，对应于传统组块式功能磁共振成像范式中基线信号变化最大的区域。此外，研究表明，与不直接刺激功能连接网络的任务相比，在激活该网络的任务执行过程中，功能网络各元素之间的相关性会增加。
