RT Journal Article
SR Electronic
T1 Human Sensorimotor Cortex Reactivates Recent Visuomotor Experience during Awake Rest
JF eneuro
JO eNeuro
FD Society for Neuroscience
SP ENEURO.0134-25.2025
DO 10.1523/ENEURO.0134-25.2025
VO 12
IS 4
A1 Ogawa, Kenji
A1 Yang, Yuxiang
A1 Yang, Huixiang
A1 Imai, Fumihito
A1 Imamizu, Hiroshi
YR 2025
UL http://www.eneuro.org/content/12/4/ENEURO.0134-25.2025.abstract
AB The re-emergence of task-related activation patterns during awake rest has been reported to play a role in memory consolidation and perceptual learning. This study aimed to test whether such reactivation occurs in the primary sensorimotor cortex following a visuomotor task. During functional magnetic resonance imaging (fMRI) scanning, 42 healthy participants (13 women and 29 men) learned visuomotor tracking, while a rotational perturbation was introduced between the cursor position and joystick angle. This visuomotor task block was interleaved with a control block, during which participants passively viewed a replay of their previously performed cursor movements. Half of the participants used their right hand, whereas the other half used their left hand to control the joystick. Resting-state scans were acquired before and after the visuomotor task sessions. A multivariate pattern classifier was trained to classify task and control blocks and was then tested on resting-state scans collected before and after the task session. Results revealed a significant increase in the number of volumes classified as “task” during post-task rest compared with pre-task rest, indicating re-emergence of task-related activity. Representational similarity analysis also showed a greater similarity to task-related patterns during the post-task rest period. Furthermore, this effect was specific to the left primary sensorimotor cortex contralateral to the hand used and significantly correlated with motor improvement following rest. Our findings reveal the reactivation of recent task-related experience in the primary sensorimotor cortex.