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ISSN : 1226-9654

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Vol.17 No.1

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The Effect of Event-Based Prospective Memory on the Performance of Ongoing Tasks: An fMRI Study

The Korean Journal of Cognitive and Biological Psychology / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2005, v.17 no.1, pp.35-49



& (2005). The Effect of Event-Based Prospective Memory on the Performance of Ongoing Tasks: An fMRI Study. The Korean Journal of Cognitive and Biological Psychology, 17(1), 35-49.

Abstract

We conducted three experiments investigating whether event-based prospective memory(PM) demanded cognitive processing resources and confirming the brain regions involved in this process. In Experiment 1, we found that, in PM task adding, the performance of ongoing verbal working memory task was decreased. It showed that PM demanded cognitive processing resources. In experiment 2, we compared the intentional executive PM condition with the control condition demanding only the verbal working memory task; we also compared the intentional maintaining PM condition without real execution with the same control condition. In both intentional executive and maintaining PM conditions, the performances of verbal working memory were lower than the control condition. This showed that results of experiment 1 were not simply from additional responses and both intentional execution and maintenance of PM demanded cognitive processing resources. Experiment 3 investigated the brain regions involved in intentional maintenance and execution of PM using the functional Magnetic Resonance Imaging (fMRI). We observed that the prefrontal and cingulate cortices were activated by PM performance, the basal ganglia were activated by intentional executive PM, and the prefrontal and parietal cortices were activated by intentional maintaining PM. These results agree with the insistence of Smith(2003) that both intentional maintenance and execution of PM are not automatic but demand conscious processing resources.

keywords
event-based prospective memory, prospective memory, delayed intention, fMRI, prefrontal lobe, 사건-의존 미래기억, 미래기억, 지연된 의도, 전전두엽, event-based prospective memory, prospective memory, delayed intention, fMRI, prefrontal lobe

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