Emrich Stephen M, Johnson Jeffrey S, Sutterer David W, Postle Bradley R
Brock University, St. Catharines, Canada.
North Dakota State University.
J Cogn Neurosci. 2017 Feb;29(2):286-297. doi: 10.1162/jocn_a_01043. Epub 2016 Sep 14.
Numerous studies have demonstrated that visual STM (VSTM) and attention are tightly linked processes that share a number of neuroanatomical substrates. Here, we used repetitive TMS (rTMS) along with simultaneous EEG to examine the causal relationship between intraparietal sulcus functioning and performance on tasks of attention and VSTM. Participants performed two tasks in which they were required to attend to or remember colored items over a brief interval, with 10-Hz rTMS applied on some of the trials. Although no overall behavioral changes were observed across either task, rTMS did affect individual performance on both the attention and VSTM tasks in a manner that was predicted by individual differences in baseline performance. Furthermore, rTMS also affected ongoing oscillations in the alpha and beta bands, and these changes were related to the observed change in behavioral performance. The results reveal a causal relationship between intraparietal sulcus activity and tasks measuring both visual attention and VSTM.
大量研究表明，视觉短时记忆（VSTM）和注意力是紧密相连的过程，共享许多神经解剖学基质。在此，我们使用重复经颅磁刺激（rTMS）并同步脑电图来研究顶内沟功能与注意力和VSTM任务表现之间的因果关系。参与者执行两项任务，要求他们在短时间间隔内关注或记住有颜色的物品，部分试验施加10赫兹的rTMS。尽管两项任务均未观察到总体行为变化，但rTMS确实以基线表现的个体差异所预测的方式影响了注意力和VSTM任务的个体表现。此外，rTMS还影响了α和β波段的持续振荡，这些变化与观察到的行为表现变化相关。结果揭示了顶内沟活动与测量视觉注意力和VSTM的任务之间的因果关系。
