Dear Francois, I tested the neg time window issue by using a group of three seizures. Photo 1 shows the result using negative time frames (-10:40 for the seizure epochs, map command: -8:2:16), and photo 2 shows the processing with positive time frames for the same seizures (frames transposed +10 sec (0:50), by modifying the database epoch mat Time variable, Time = Time +10; then saving it modified in the database; map command: 2:2:26).
Reassuringly, the group delay maps look identical as far as scout topology, but shifted in the colormap position (where they should also be identical), any thoughts? Thank you,
Octavian