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주파수 통과대역필터가 작업 기억 관련 사건관련전위 P300에 미치는 영향

Effects of the Frequency Band Pass Filter on the P300 Event-related Potential in the Working Memory

대한통합의학회지 2020년 8권 2호 p.131 ~ 138
박웅식, 이정우,
소속 상세정보
박웅식 ( Park Woong-Sik ) - Kwangju Women’s University Department of Occupational Therapy
이정우 ( Lee Jeong-Woo ) - Kwangju Women’s University Department of Physical Therapy

Abstract


Purpose : The purpose of this study was to investigate the effects of the frequency band pass filter on the P300 event-related potential in the working memory.

Methods : The subjects were 20 women in their 20s who applied for participation in the experiment. Event-related potentials (ERPs) were elicited using 3-back tasks for the working memory, and were recorded from Fz, Cz, and Pz scalp electrodes. The high-pass filters were set to 0.01, 0.1, and 0.3 Hz for analysis purposes, and the low-pass filters were set to 30 and 15 Hz.

Results : Latency and amplitude had no significant interaction effects in both the high- and low-pass filters. For the main effects, the latency and amplitude of the P300 event-related potential had no significant difference in the high-pass filters, but the latency had a significant difference in the low-pass filter of Fz, and the amplitude had a significant difference in the low-pass filter of Pz.

Conclusion : The results of this study showed that the less than 0.3Hz high filters had no effects on the differences between the latency and amplitude of the P300 event-related potential in the working memory. The 30Hz low-pass filter, however, was found to be useful for recording the P300 event-related potential in the working memory.

키워드

band pass filter; event related potential; P300; working memory; n-back task

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