Hello! Is it possible to create surrogate R-peaks in Brainstorm. I came across using this technique as a control analysis for cardiac artifact.
Surrogate R-peaks were created to investigate
whether the differential HEP modulation is time locked to the original
R-peaks. To create surrogate R-peaks that preserve the same interbeat
interval and variability with the original R-peaks, the onset of all the
original R-peaks were randomly shifted by the same amount (a500
500 ms) separately for each stroking period (e.g., 15 stroking periods
for each synchronous and asynchronous condition) and for each subject.
A total of 200 sets of surrogate R-peaks were created. - Park et al. (2016)