Table 1.

The main variables contained in each data file.

Data file variable	Description
\acquisition\ElectricalSeries	ECoG recordings
\processing\behavior\data_interfaces\Position	Upper body poses
\processing\behavior\data_interfaces\ReachEvents	Wrist move events
\intervals\reaches	Quantitative event features
\intervals\epochs	Coarse behavior labels
\electrodes	Electrode features

Files are named sub-##_ses-#_behavior+ecephys.nwb, with ## indicating the participant and # denoting the day of recording.