Fig. 11
From: Multi-scale convolutional transformer network for motor imagery brain-computer interface

Visualization using t-SNE. (a) Raw EEG data distribution. (b) Feature distribution after the CNN module. (c) Feature distribution after the first layer of the Transformer module. (d) Feature distribution following full Transformer integration. Blue dots indicate the left hand, orange dots represent the right hand, green dots represent the feet, and red dots signify the tongue.