Gérard Derosière

The paper investigates how control-driven and reward-driven urgency regulation differ in individuals with varying impulsivity using motor system measurements.

This paper uses diffusion MRI and computational modeling to show that white matter microstructure predicts individual differences in effort and reward sensitivity.

This study examines fronto-motor circuits related to effort-based decision-making and apathy in healthy individuals, finding associations between apathy scores and structural and effective connectivity in specific circuits.

The paper investigates how task goals influence the relationship between decision and movement speed, finding that coregulation occurs as a default but is replaced by a tradeoff when detrimental to reward rate.

This study investigates how extrinsic reward affects motor plasticity during skill learning, finding that reward reduces corticospinal output variability and correlates with individual reward sensitivity.

This study uses tTIS to show that 80Hz striatal stimulation disrupts reinforcement learning of motor skills, while 20Hz does not, indicating a frequency-dependent effect on striatal function.

The paper investigates how post-error slowing varies based on speed-accuracy tradeoff policies in different contexts and finds that it is only adaptive in a hasty context.

This study shows that reward timing affects motor learning, with short delays leading to continuous gains and long delays causing early plateaus and reduced consolidation.

The paper shows that hasty decisions involve broad motor activity amplification and local suppression, improving signal-to-noise ratio in the chosen motor representation.

This paper uses dual-site TMS to examine the causal influence of SMA and mOFC on M1 activity, finding SMA stimulation facilitates M1 activity related to SMA volume, while mOFC stimulation suppresses M1 activity regardless of mOFC volume.

This study shows reward enhances motor learning beyond reinforcement feedback by specifically strengthening reinforcement-related motor adjustments, with effects lasting beyond the training session.

This study shows that motor training strengthens preparatory suppression of corticospinal excitability, which is linked to faster movement initiation.

This study disrupts M1 activity using cTBS and finds it delays motor processes but not deliberation in action choices.