This toolbox helps researchers with the planning of experimental designs for fMRI experiments. In short: depending on the exact time and order of stimulus presentations, a study can achieve higher statistical power or efficiency for estimating the brain signal. As such, depending on the design criteria, you'll have more power with fewer subjects or with shorter experiments. For more details about the methods, please see the methods section, or take a look at the step-by-step tutorial on this page. Do you want to know how to run an optimisation on your computer without the GUI, go to the package information page.
You're looking at the first version of the design efficiency toolbox. We need input ! Any feedback is welcome: visual, aesthetical, user friendliness, bugs,... If you were redirected to a 404 or 500 page, we probably got a very detailed report of what went wrong, but feel free to give more details.
We want to make this toolbox as useful as possible. If you're currently planning a study and your design requires specific options that are not in here, let us know ! We might include it. If you have other ideas on how to extend or improve this toolbox, just fill out the form below.
Here are some ideas on our plate:
- Speed up the optimisation.
- HRF functions: Right now, we're using the double gamma hrf from SPM. We might include others in the future
- Different drift models
- Other optimisation algorithms
- Allow only 1 stimulustype
- Do ITI jittering using a truncated exponential rather than uniform between two values
- Write a paper about it :-)
Depending on the feedback, we will make a list of potential new features and bugs and prioritise accordingly !