Journal
JOURNAL OF MOTOR BEHAVIOR
Volume 45, Issue 1, Pages 79-83Publisher
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/00222895.2012.746282
Keywords
eye-hand coordination; distraction; memory scanning; motor control; working memory capacity
Funding
- AFA [090231]
- Swedish Council for Working Life, Social Research Grant [2009-1761]
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The authors present a study of the relationship between individual variation in working memory capacity (WMC) and visually guided hand control in the face of visual distraction. WMC was assessed with the automated operation span task. Hand control was measured by requesting participants to track a visual target with a hand-held touch screen pen. Tracking error increased when nontarget visual objects (distractors) appeared, especially in individuals with low WMC. High-WMC individuals are less impaired by distractors than their low-WMC counterpart, because they resume target tracking more quickly after distractor onset. The results suggest that visual distractors cause a momentary interruption to tracking movements and that high WMC attenuates this interruption by facilitating visual search.
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