Visual Feedback of Target Position Affects Accuracy of Sequential Movements at Even Spaces

ABSTRACT

The role of visual feedback during movement is attributed to its accuracy, but findings regarding the utilization of this information are inconsistent. We developed a novel dot-placing task to investigate the role of vision in arm movements. Participants conducted pointing-like movements between two target stimuli at even spaces. In Experiment 1, visual feedback of targets and response positions was manipulated. Although visual loss of target stimuli hindered accuracy of movements, the absence of the position of previously placed dots had little effect. In Experiment 2, the effect of movement time on accuracy was assessed, as the relationship between these has been traditionally understood as a speed/accuracy trade-off. Results revealed that duration of movement did not impact movement accuracy.

KEYWORDS:

• motor control
• movement accuracy
• placing
• visual feedback

Additional information

Funding

Grant-in-Aid for JSPS Fellows (JP16J04383), KAKENHI (JP16H01515)