Neural correlates of mental preparation for successful insight problem solving

sA distinct type of mental preparation (activity in medial frontal and temporal areas) had been found to facilitate insight problem solving independent of specific problems [25]. In order to explore whether neural activity during a preparatory interval (mental preparation) is associated with which insight problems would be solved or not, we developed a task that uses Chinese logogriphs (riddles) as materials. Blood oxygenation level-dependent fMRI contrasts between Successful and Unsuccessful mental preparation were measured. Results showed that mental preparation leading to successful problem solving involves heightened activity in the left middle/medial frontal gyrus, the left middle/superior temporal gyrus, the right cerebellum, the bilateral claustrum and the left postcentral gyrus. We discussed the role of these areas in mental preparation for successful insight problem solving.

Research highlights▶ Learning-testing experimental paradigm and traditional Chinese logogriphs are used. ▶ Left middle/medial frontal gyrus is associated with “spontaneous conscious effort”. ▶ Middle temporal gyri and right cerebellum are related to retrieve and maintain heuristic information obtained during the learning stage. ▶ Left postcentral gyrus is involved in mere preparation and execution of motor responses.