EEG correlates of psychoactive ketamine: Comparing spectral power and complexity

Data and scripts for analyzing and visualizing spectral power and complexity of spontaneous EEG signals in normal waking and psychoactive ketamine states.

Re-analyzes EEG data from a publicly available dataset (must be downloaded separately):
Farnes, N., et al. (2020). Increased signal diversity/complexity of spontaneous EEG, but not evoked EEG responses, in ketamine-induced psychedelic state in humans. PLOS ONE, 15(11), e0242056. https://doi.org/10.1371/journal.pone.0242056
https://datadryad.org/dataset/doi:10.5061/dryad.j9kd51c9q

11D-ASC.csv: participant retrospective ratings of phenomenology using the 11D-ASC instrument

Ketamine_EEG_complexity.m: MATLAB script for computing EEG signal complexity
lzw.m: MATLAB function for Lempel-Ziv-Welch algorithm (from https://github.com/iulia-m-comsa/EEG/tree/master/Lempel-Ziv%20complexity)
lzwNormalised.m: MATLAB function for Lempel-Ziv-Welch algorithm (from https://github.com/iulia-m-comsa/EEG/tree/master/Lempel-Ziv%20complexity)

Ketamine_EEG_power.m: MATLAB script for computing EEG spectral power

Ketamine_EEG_phenomenology.m: MATLAB script for computing correlations between 11D-ASC scores and changes in spectral power and complexity

Ketamine_EEG_visualization.m: MATLAB script for visualizing the results
plot_topography.m: MATLAB script for plotting scalp topographies (from https://www.mathworks.com/matlabcentral/fileexchange/72729-topographic-eeg-meg-plot)
MEG_Yokogawa-440ag.mat: MATLAB file required for plotting scalp topographies
Standard_10-10_47ch.mat: MATLAB file required for plotting scalp topographies
Standard_10-20_81ch.mat: MATLAB file required for plotting scalp topographies