Beta-band activity reflects neural processes well beyond sensorimotor functions, including cognition and motivation. In this Journal of Neuroscience article in collaboration with Nicola Malfait (Marseille), by disentangling alternative spatio-temporal-spectral patterns of possible beta-oscillatory activity, we reconcile a seemingly discrepant literature.
First, high-beta power in the medial frontal cortex showed opposite modulations separated in time in success and failure trials; power was higher in success trials just after success feedback and lower in the postmovement period compared with failure trials.
Second, although medial frontal high-beta activity was sensitive to task outcome, low-beta power in the medial parietal cortex was strongly attenuated following movement execution error but was not affected by the task outcome or the sensory-prediction error.
We propose that medial beta activity reflects distinct feedback signals depending on its anatomic location, time window, and frequency range.
To know more:
- Schwey, A., Battaglia, D., Bahuguna, J., and Malfait, N. (2023). Different Faces of Medial Beta-Band Activity Reflect Distinct Visuomotor Feedback Signals. J. Neurosci. 43, 8472–8486. 10.1523/jneurosci.2238-22.2023.