HRF Convolution

In this tab, you can select which predictors you’d like to convolve with the canonical haemodynamic-response function (HRF).

Typically, you’ll want to convolve all non-confounds. You can easily do this by clicking Select All Non-Confounds.

As in the Predictors tab, you can perform a full-text search over all the predictors you previously selected.

For now, we are applying a “SPM” style HRF, with no derivatives.

Note

In reality, HRF convolution is another transformation that is applied after all other transformations.