Sebastian Sporn

The effects of varying intensities of unilateral handgrip fatigue on bilateral movement

This study examines how unilateral handgrip fatigue at different intensities affects bimanual movement quality, finding no measurable impact on movement quality despite changes in neural dynamics.

Use of the non-paretic arm reflects a habitual behaviour in chronic stroke

This study shows that chronic stroke survivors habitually use their non-paretic arm even when it is less beneficial, especially under time pressure.

Reward-based improvements in motor sequence learning are differentially affected by dopamine

This study shows that dopamine antagonists impair reward-based motor vigour but not movement fusion during sequential reaching tasks.

Modulation of motor vigour by expectation of reward probability trial-by-trial is preserved in healthy ageing and Parkinson's disease patients

This study shows that reward probability expectations dynamically modulate motor performance in healthy ageing and Parkinson's disease patients without affecting reaction times.

The dissociable effects of reward on sequential motor behaviour

This study investigates how explicit reward and performance feedback differentially affect sequential motor behavior, showing that their combination maximizes performance gains and leads to long-lasting improvements.

Age-Related Differences in Reward-Based Modulation of Sequential Reaching Performance

This study compares how reward affects motor performance in young and older adults during sequential reaching tasks, finding reward improves performance in both groups.

Reward-based invigoration of sequential reaching

This study shows that reward improves sequential reaching performance, with gains maintained after reward removal, suggesting coarticulation enhances efficiency and retention of motor improvements.

Alterations in the amplitude and burst distribution of sensorimotor beta oscillations impair reward-dependent motor learning in anxiety

This study shows that anxiety impairs reward-based motor learning by altering sensorimotor beta oscillations and volatility estimation.