Data for Handwriting Imagery(LTVA&HTVA)

This dataset includes offline data from handwriting imagination brain computer interfaces, fNIRS data, scale data, and BCI online testing data under two paradigms, namely Low Temporary Variation Abundance (LTVA) and High Temporary Variation Abundance (HTVA); The former includes EEG under 8 directions of straight line handwriting imagination task, while the latter includes EEG under 8 curved letter handwriting imagination task; The fNIRS data represents the changes in parietal blood oxygen during LTVA and HTVA, and the scale measures cognitive load before and after the experiment. Finally, EEG data from multiple subjects undergoing BCI online testing and HWI were included.