Multimodal Motor Imagery EEG Dataset

A total of thirty healthy subjects were recruited (15 males and 15 females, 29 are right-handed; aged 24.26 ± 3.46 years). All subjects declared no history of stroke or other brain diseases. The experiment was approved by Westlake University Ethics Committee (approval ID: 20191023swan001). EEG signals of MI, ME, and GMI were recorded during six motions: right-hand finger tapping, left-hand finger tapping, holding a pen, opening a pen, crossing fingers, and moving an arm. Each task included five trials under three motor conditions (ME, MI, GMI). In MI tasks, subjects were instructed to imagine themselves doing the motion without any muscle activities with audio stimuli. In GMI tasks, the screen shows a picture of a specific motion, and subjects were instructed to conduct MI tasks with visual guidance.
EEG data were collected with 32 Ag/AgCl electrodes, a ground electrode, and a reference electrode, arranged in accordance with the 10–20 international standard. The EEG recording system consisted of the Brain Products actiCHamp Plus (EEG signal amplifier) and actiCAP slim (active EEG electrodes). More details of the recording system of the EEG signals and the experimental protocol can be found in our former work [5 (link)]. The dataset of this manuscript and our former work is the same.