Perhaps you have entered the .mat file as 'multiple conditions' instead of 'multiple regressors' for some subject/session? ('names', 'onsets', and 'durations' are the expected variables when defining multiple conditions using a .mat file, while 'R' is the single expected variable when defining multiple regressors using a .mat file)
> Hi all,
> its about Art Toolsbox
> When I added multiple regressor (art_regression_outliers_and_movement_swrtime0001.mat ) to my First level design.
> its give me this error
> art_regression_outliers_and_movement_swrtime0001.mat' is invalid.
> File must contain names, onsets, and durations cell arrays of equal length.
> any idea from where this error coming from
> Thank you