Participants were fitted with an EEG cap with 64 electrodes (
waveguard original, ANT Neuro). Additionally, participants were fitted with electrodes on three muscles of the right upper extremity: first dorsal interosseous (FDI), biceps brachii, and anterior deltoid.
Participants completed three trials of the BBT with the right hand (
Fig. 1). The BBT requires a participant to transfer as many small wooden blocks as possible across a 15.2 cm tall barrier with the designated testing hand, during 1 min of testing (Mathiowetz et al., 1985 (
link)). One hundred and fifty 2.5 cm
3 wooden blocks were placed in random orientations in the partition on the side of the testing hand. A participant's score was equal to the number of blocks moved over the barrier, to an identical, but empty partition, in 1 min. The experimenter instructed the participants to move the blocks as quickly as possible and encouraged them throughout each trial.
Participants completed five trials of one subset of the PPT, in which they used only their right hand to transfer metal pegs from their starting position, in the upper right-hand side of the board, to the right column with small holes spaced along the length of the board (
Fig. 1). Each participant was instructed to transfer as many pegs as possible in 30 s.
The experimenter performed one trial of the BBT and PPT to show the participant how to perform it properly.
Mongold S.J., Georgiev C., Legrand T, & Bourguignon M. (2024). Afferents to Action: Cortical Proprioceptive Processing Assessed with Corticokinematic Coherence Specifically Relates to Gross Motor Skills. eNeuro, 11(1), ENEURO.0384-23.2023.