Dear GIFT users, I am reading the GIFT manual, in the section of 3.11.1 Temporal Sorting, there is a sentence as follows. "The regressors selected are ”rightbf(1)”, ”rightbf(2)”, ”leftbf(1)” and ”leftbf(2)” time courses. " Would you please tell me what is right*bf(1)? Can I plot it? I am also confused about "regressor", Can you give me some explaination. Thank you