Corticospinal Modulation of Precision Movements.

TitleCorticospinal Modulation of Precision Movements.
Publication TypeJournal Article
Year of Publication2024
AuthorsMarino F, Moreno-López Y, Hollis E
JournalNeurosci Insights
Date Published2024

Recently we demonstrated a critical role for temporal coding of corticospinal activity in a prehension movement requiring precise forelimb control. Learning of precision isometric pull drives large-scale remodeling of corticospinal motor networks. Optogenetic modulation of corticospinal activity and full transection of the corticospinal tract disrupted critical functions of the network in expert animals resulting in impaired modulation of precise movements. In contrast, we observed more widespread corticospinal co-activation and limited temporal coding on a similar, yet more simplistic prehension task, adaptive isometric pull. Disrupting corticospinal neuron activity had much more limited effects on adaptive isometric pull, which was found to be corticospinal independent by transection of the corticospinal tract. Here we discuss these results in context of known roles for corticospinal and corticostriatal neurons in motor control, as well as some of the questions our study raised.

Alternate JournalNeurosci Insights
PubMed ID38680210
PubMed Central IDPMC11056087