we will publish both the data and code if the paper is accepted---this was an oversight by us for not making clear we

We thank the reviewers for their thoughtful reviews and below we address their major concerns. This variability would be expected even from different recording sessions for the same subject. This allows researchers to add multiple covariates (e.g., different experimental Also related to Reviewer 1's comments, it is certainly possible to have different numbers Another major point/question raised by the reviewers was the sensitivity of our results to our intialization procedure. It is not necessary but it simplifies the inference derivation.