Figure 4

Quantification of synchronized/desynchronized EEG activity within the adjusted μ and β bands over 12 recording sessions for all participants: a) ${\text{ERD/ERS}}_{\text{μ}}^{\text{(C3L)}}$${\text{ERD/ERS}}_{\text{μ}}^{\text{(C4L)}}$, ${\text{ERD/ERS}}_{\text{μ}}^{\text{(C3R)}}$ and ${\text{ERD/ERS}}_{\text{μ}}^{\text{(C4R)}}$ b) ${\text{ERD/ERS}}_{\text{β}}^{\text{(C3L)}}$, ${\text{ERD/ERS}}_{\text{μ}}^{\text{(C4L)}}$, ${\text{ERD/ERS}}_{\text{β}}^{\text{(C3R)}}$, and ${\text{ERD/ERS}}_{\text{β}}^{\text{(C4R)}}$. The ratios in the μ band are represented as ${\text{ERD/ERS}}_{\text{μ}}^{(xy)}$ and that in the β band as ${\text{ERD/ERS}}_{\text{β}}^{(xy)}$, where x may denote the EEG channels C3 or C4 and y may denote either left upper limb MI (L) or right upper limb MI (R).