A new preprint! Bartlett and Welch pioneered stats for estimating frequency spectra in the 50s and 60s. Their core methods are still widely used today though statistical methods have greatly advanced.
We blend Welch-style spectrum estimation and general linear modelling in a single framework allowing contrast coding, confound regression, multi-level modelling and non-parametric permutation.
The GLM-Spectrum:
https://www.biorxiv.org/content/10.1101/2022.11.14.516449v1
@awodeyar thanks! Glad you like it!