Performance During a Sequential Visuomotor Task

Using Sequential Structure to Improve Visuomotor Control

In daily life, people make rapid, goal-directed movements to interact with their environment. Since these movements are goal-directed, the outcome of the movement is important. A plan is typically formulated to make the movement using visual information about target location before the movement is initiated. However, in dynamic environments people need to track the location of an object if it m...

Uncovering a context-specific connectional fingerprint of human dorsal premotor cortex.

Primate electrophysiological and lesion studies indicate a prominent role of the left dorsal premotor cortex (PMd) in action selection based on learned sensorimotor associations. Here we applied transcranial magnetic stimulation (TMS) to human left PMd at low or high intensity while right-handed individuals performed externally paced sequential key presses with their left hand. Movements were c...

Dissociating sequence learning performance in Parkinson's disease: Visuomotor sequence acquisition and pattern judgment on a serial reaction time task.

In this study, the sequence learning performance of 16 non-demented patients with Parkinson's disease (PD) was compared with 18 age-matched healthy controls on a verbal version of the serial reaction time (SRT) task intended to encapsulate both visuomotor- and judgment-linked learning processes. Visuomotor sequence performance in PD patients was closely related to baseline response speed, with ...

Contributions of Spatial Working Memory to Visuomotor Learning

Previous studies of motor learning have described the importance of cognitive processes during the early stages of learning; however, the precise nature of these processes and their neural correlates remains unclear. The present study investigated whether spatial working memory (SWM) contributes to visuomotor adaptation depending on the stage of learning. We tested the hypothesis that SWM would...

Visuomotor Behaviours during Functional Task Performance with a Myoelectric Prosthesis

Distinct neural correlates of time-on-task and transient errors during a visuomotor tracking task after sleep restriction

Sleep loss leads to both time-on-task slowing of responsiveness and increased frequency of transient response errors. The consequences of such errors during real-world visuomotor tasks, such as driving, are serious and life threatening. To investigate the neuronal underpinning of time-on-task and transient errors during a visuomotor tracking task following sleep restriction, we performed fMRI o...