I’m trying to run a nilearn.decoding.Searchlight cross subject level but found that the function does not give individual score on each fold or some kind of a variance output. It only outputs an averaged accuracy score as searchlight.scores_. Is that right?
I am asking because I want to perform a simple t-test against chance level (I understand eventually a permutation test is what we want but just for now) and it’s not possible without some kind of a variance score. Specifically, I’m imagining something like when you run a classifier in nilearn.decoding.decoder, decoder.cv_scores_ gives you the individual accuracy score on each fold, so we can calculate the variance. Thanks for any input!