Time-frequency maps of ERD/S during sessions 3—6 (MI sessions).

<p>The upper left map shows the results for right foot dorsiflexion MI (condition <b>F</b>), the lower left map results for right foot dorsiflexion MI with sound imagery of a bass drum (condition <b>FS</b>), the upper right map results for right leg extension MI (condition <b>L</b>), and the lower right map results for target-direct right leg extension MI (kicking a ball, condition <b>LT</b>). Mental imagery to a target (<b>LT</b>) induced significantly larger ERD within the beta band than non-target MI (leg extension, <b>L</b>), while there were no significant differences in ERD/S between dorsiflexion MI with and without sound imagery (conditions <b>FS</b> and <b>F</b>).