TBH, other than the NASA resources, I'm building it from scratch. Goal would be to record the signal while prompting a user to say/think a subset of words. Afterwards the HOPE is that I will be able to train a simple- functional- model based on those inputs.
EDIT: User `tbenst` linked their thesis above[1].
1. https://neuroscience.stanford.edu/research/funded-research/s...