Lior Shmuelof , John W . Krakauer and Pietro Mazzoni the levels of task success and trajectory control

How is a motor skill learned ? Change and invariance at the levels of task success

How is a motor skill learned? Change and invariance at the levels of task success 3 and trajectory control 4 5 Lior Shmuelof, John W. Krakauer and Pietro Mazzoni 6 7 Abbreviated title: 8 Performance and kinematics of motor skill learning 9 10 11 12 13 Authors and affiliations: 14 Lior Shmuelof, John Krakauer, Pietro Mazzoni 15 1. Motor Performance Laboratory, The Neurological Institute, Columbi...

Lior Shmuelof , Juemin Yang , Brian Caffo , Pietro Mazzoni and John W . Krakauer The neural correlates of learned motor acuity

How is a motor skill learned? Change and invariance at the levels of task success and trajectory control.

The public pays large sums of money to watch skilled motor performance. Notably, however, in recent decades motor skill learning (performance improvement beyond baseline levels) has received less experimental attention than motor adaptation (return to baseline performance in the setting of an external perturbation). Motor skill can be assessed at the levels of task success and movement quality,...

The neural correlates of learned motor acuity.

We recently defined a component of motor skill learning as "motor acuity," quantified as a shift in the speed-accuracy trade-off function for a task. These shifts are primarily driven by reductions in movement variability. To determine the neural correlates of improvement in motor acuity, we devised a motor task compatible with magnetic resonance brain imaging that required subjects to make fin...

Overcoming motor "forgetting" through reinforcement of learned actions.

The human motor system rapidly adapts to systematic perturbations but the adapted behavior seems to be forgotten equally rapidly. The reason for this forgetting is unclear, as is how to overcome it to promote long-term learning. Here we show that adapted behavior can be stabilized by a period of binary feedback about success and failure in the absence of vector error feedback. We examined the t...