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KMID : 1035420200080020131
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Journal of The Korean Society of Integrative Medicine
2020 Volume.8 No. 2 p.131 ~ p.138
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Effects of the Frequency Band Pass Filter on the P300 Event-related Potential in the Working Memory
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Park Woong-Sik
Lee Jeong-Woo
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Abstract
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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.
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KEYWORD
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band pass filter, event related potential, P300, working memory, n-back task
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