Previous studies have found working memory (WM) advantages of the pathological smartphone use (PSU) group, but most of which were emphasized in the network-related domain. Whether the advantages can transfer to other domains has yet to be confirmed. In particular, exploring from a brain mechanism perspective is necessary. Using the classical N-back paradigm, this study selected network-related words and neutral words as materials combined with fNIRS to probe the verbal WM characteristics of the PSU group. The results showed that β in channel 3, channel 4, and channel 5 were significantly lower in the PSU group than those in the control group The analysis of the region of interest revealed that the PSU group showed significantly lower β in the l-DLPFC and frontopolar. Granger Causality results showed that functional connectivity between frontopolar and R-DLPFC for the PSU group was significantly higher than for the control group in the network word condition. These results demonstrate that the PSU group has an advantage in WM, transferring from the network-related stimulus to the neutral stimulus. The advantages of network stimulus were related to bidirectional connectivity between frontopolar and R-DLPFC. Also, the l-DLPFC and frontopolar are associated with the cross-material consistency of WM.

之前的研究发现，病态智能手机使用（PSU）组的工作记忆（WM）优势，但大多数都强调在网络相关领域。这些优势是否可以转移到其他领域还有待证实。尤其需要从脑机制角度进行探索。本研究采用经典的N-back范式，选取网络相关词和中性词作为材料，结合fNIRS来探讨PSU群体的言语WM特征。结果显示，PSU组的通道3、通道4和通道5的β显着低于对照组。对感兴趣区域的分析显示，PSU组的l-DLPFC和通道中的β显着降低。额极。格兰杰因果关系结果显示，在网络词条件下，PSU 组的额极和 R-DLPFC 之间的功能连接显着高于对照组。这些结果表明，PSU 组在 WM 方面具有优势，从网络相关刺激转向中性刺激。网络刺激的优势与额极和 R-DLPFC 之间的双向连接有关。此外，l -DLPFC 和额极与 WM 的跨材料一致性相关。