論文原著：Reduced brain activity and functional connectivity during creative idea generation in individuals with smartphone addiction

Doi：10.1093/scan/nsac052

Abstract：

Since the coronavirus disease 2019 outbreak, the frequency of smartphone use has surged, which has caused an increase in smartphone

addiction among individuals. Smartphone addiction can impair various cognitive abilities. However, to date, the impact of smartphone

addiction on creative cognition remains unclear. The current functional near-infrared spectroscopy study compared neural differences

between smartphone addiction tendency (SAT) and healthy control (HC) individuals during creative idea generation. In particular, by

manipulating a key component of creative cognition, that is, overcoming semantic constraints, we explored whether SAT individuals

could overcome semantic constraints. Both the SAT and HC groups completed the alternate uses task (AUT) in semantic constraint and

unconstraint conditions. The results indicated that the prefrontal cortex (PFC) and temporal regions were less active during AUT in the

SAT group than in the HC group. In the SAT group, the PFC was less active under constraint than unconstraint conditions. Moreover, both

task-related and resting-state functional connectivity analyses indicated weaker coupling between the PFC and temporal regions in the

SAT than in the HC group. Furthermore, the left dorsolateral PFC mediated the effect of smartphone addiction on creative performance.

These findings provide unprecedented neuroimaging evidence on the negative impact of smartphone addiction on creative cognition.

中文摘要：

自2019年新冠疫情爆發以來，智慧型手機的使用頻率大幅上升，導致個體的手機成癮情況增加。智慧型手機成癮已被證實會損害多種認知能力，但目前為止，其對創造性認知的影響仍不明確。本研究利用功能性近紅外線光譜儀（fNIRS）探討手機成癮傾向（SAT）者與健康對照組（HC）在創造性想法產出過程中的神經差異。

特別地，透過操弄創造性認知的一個關鍵成分——克服語意限制，來觀察SAT個體是否具備克服語意限制的能力。SAT與HC兩組皆在有語意限制與無語意限制的條件下完成「替代用途任務」（AUT）。

結果顯示，與HC組相比，SAT組在執行AUT任務期間，其前額葉皮質（PFC）與顳葉區域的活化程度明顯較低。SAT組在有語意限制條件下的前額葉皮質活化程度更低於無語意限制條件。此外，無論是在任務相關還是靜息狀態下的功能性連結分析中，SAT組的前額葉與顳葉之間的連結都較HC組弱。

更進一步地，研究發現左側背外側前額葉皮質（left dorsolateral PFC）在手機成癮對創造力表現的影響中扮演中介角色。

這些研究結果首次以神經影像學證據指出，手機成癮對創造性認知具有負面影響。