As a high-order cognitive ability, creativity is viewed as the result of complex interplay between a set of mental processes. However, previous studies have mainly tested one-to-one mutual relations between creativity and other cognitive abilities. It lacks studies to examine whether creativity is related to the interaction between cognitive systems. The current study aimed to fill this gap by testing the relations of creativity to the interactions between cognitive control and episodic memory systems using both behavioral and neuroimaging methods. The Alternative Uses Task was used to measure the divergent component of creativity. A computer-based behavioral task was used to measure cognitive control, episodic memory, and their interactions. Additionally, the interactions between cognitive systems were characterized by computing the resting-state functional connectivity between hippocampus and prefrontal regions, which are the neural substrates for episodic memory and cognitive control, respectively. By analyzing these behavioral and neuroimaging data, the behavioral results indicated that creativity was significantly related to the effect of cognitive control induced by switching tasks or proactive cues on subsequent memories of items or sources. Additionally, neuroimaging results showed that creativity was significantly related to the connectivity from hippocampus to both left superior frontal gyrus and middle frontal gyrus. Such relations were also differentiated between anterior and posterior hippocampus. Altogether, these findings suggest that creativity is related to interactions between cognitive control and episodic memory, supporting the claim that creativity is the result of complex interplay between high-order cognitive functions.
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