Further Analysis of EEG Patterns during Different Kinesthetic Motor Imagery

Many studies have reported inconsistent results when using kinesthetic motor imagery (KMI) to imagine the same movement. This inconsistency may be due to variations in how individuals perform KMI, which has not been thoroughly compared in previous research. In our previous letter, we reported the results of the initial experiment. Here, we categorized KMI into single-hand KMI (S-KMI) and double-hand KMI (D-KMI) and investigated potential differences using t-tests. To gain a clearer understanding of brain features, we conducted Event-Related Spectral Perturbation (ERSP) analysis and topographic mapping. Additionally, recognizing the importance of model classification accuracy for BCI applications, we performed classification evaluations. The results revealed significant differences between S-KMI and D-KMI, highlighting that different methods for performing KMI were crucial for BCI applications and significantly differed in brain features.