Figure 2 | Scientific Reports

Figure 2

From: States and traits of neural irregularity in the age-varying human brain

Figure 2

Weighted permutation entropy captures 1/f noise. (A) PSD slope changes with age. The slope of the PSD (inset) at electrode Cz over frequencies 1–30 Hz becomes less negative with increasing age. Younger subjects are shown in blue and older subjects in red. (B) WPE and PSD slopes are linearly related. The correlation of average entropy (WPE) and PSD slope is shown. The inset shows the same correlation after controlling statistically for participant age. **p < 0.01; ***p < 0.0001.

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