Figure 1.

Experimental design and glove systems. Participants were first tested in the two-point discrimination task (2PDT) and the grating orientation task (GOT) both at the index finger and at the middle finger. While wearing the glove, they were then stimulated for 3 h at the trained finger only (index finger for half of the group, middle finger for the other half) using either loudspeaker-based somatosensory stimulation (left) or LRA-based somatosensory stimulation (right). The non-trained finger was covered in the glove, but the stimulation module was off. After the stimulation, participants were tested again in the 2PDT and the GOT both at the trained finger and the non-trained finger.