Stieger 2021: trial lengths could be less than 3s

[bougrain]

Dear all,

Stieger 2021 protocol ask for motor imageries to reach a target located at different borders before the 6s timeout.
The loader provides the first 3s of activities but trial lengths are variable from 0.04 ms to 6 s (see the article)
So the 3s segment can contain less than 1s of motor imagery for example.

triallength.ipynb

Best regards,
Laurent