Add Refs for the use of Basis #387
Description
Is your feature request related to a problem? Please describe.
Add reference papers that used specific basis types in doc pages and docstrings.
Fourier Basis
After a quick literature review, the only relevant paper I could find is
- Calabrese et al. 2011: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0016104, in which a spectrogram is used as GLM predictor. The spectrogram can be defined by convolving a Fourier basis with the an input signal.