Functions for computation of Baseline-shift index (BSI)
bsi_pipeline - is a pipeline for BSI computation
ssd_extended - Spatio-Spectral Decomposition with additional processing
power_ratio - takes in power spectral density, signal and noise band edges, computes power ratio
compute_bsi - computes BSI from amplitude envelope of oscillatory activity and corresponding low-frequency signal (baseline shifts)
The method for computing BSI is adapted from
Nikulin, V. V., Linkenkaer-Hansen, K., Nolte, G., & Curio, G. (2010). Non-zero mean and asymmetry of neuronal oscillations have different implications for evoked responses. Clinical Neurophysiology, 121(2), 186–193. https://doi.org/10.1016/j.clinph.2009.09.028
Nikulin, V. V., Linkenkaer-Hansen, K., Nolte, G., Lemm, S., Müller, K. R., Ilmoniemi, R. J., & Curio, G. (2007). A novel mechanism for evoked responses in the human brain. European Journal of Neuroscience, 25(10), 3146–3154. https://doi.org/10.1111/j.1460-9568.2007.05553.x