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. 2020 Jan 31;10:1615. doi: 10.1038/s41598-020-58365-0

Figure 2.

Figure 2

Delta-band (2–4 Hz) power at three areas, topography, and heart rate changes near pLM onset. Delta-band power in the central area increased significantly at −3~−2 seconds before pLM onset. Heart rate increased at −1 second, and delta power in the frontal and parietal areas increased at −2~−1 seconds before pLM onset. Red dots indicate significant changes compared to the value of baseline interval using paired t-test (uncorrected p < 0.01). An EEG power value at −10 seconds indicates normalized power at −10~−9 seconds, and so on. Abbreviations: pLM, LM belonging to PLMS; LM, leg movement; PLMS, periodic leg movements during sleep.