Before performing the FCS, a single set of 153 birds were scored by the four persons to estimate the correlation between scores of different persons (between-observer correlation).
Continuous variables used in the Pearson correlation tests were tested for normality with the Shapiro Wilk test before performing the analyses.
Meditate before performing the spell.
Wield the staff before performing the spell.
Spearman's rank correlation or Pearson correlation was used to perform the correlation analysis.
Variables not normally distributed were log transformed to normalize their distribution before performing partial correlation.
Measured Raman spectra were background subtracted, normalized using Multiplicative Scatter Correction (MSC), smoothed using smoothing spline technique [ 26] and median centered before performing 2D correlation and PCA.
Before performing correlation analyses, a band-pass Butterworth filter between 0.033 Hz and 0.13 Hz was applied on the two selected component time courses.
Because triglycerides showed skewed distributions, log transformation was performed before performing correlation and regression analysis.
