Eye-Hand Coordination Asymmetries in Manual Aiming

The authors investigated whether movementplanning and feedback-processing abilities associated with the 2 hand-hemisphere systems mediate illusion-induced biases in manual aiming and saccadic eye movements. Although participants' (N = 23) eye movements were biased in the direction expected on t...

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Bibliographic Details
Published in:Journal of motor behavior 2007-01, Vol.39 (1), p.9-18
Main Authors: Lavrysen, Ann, Elliott, Digby, Buekers, Martinus J., Feys, Peter, Helsen, Werner F.
Format: Article
Language:English
Subjects:
Adolescent
Adult
Advantages
asymmetry
Biomechanical Phenomena
Brain
Brain Hemisphere Functions
Coordination
Eye movements
Eye Movements - physiology
Feedback - physiology
Female
Functional Laterality - physiology
Hand - physiology
Humans
Illusions - physiology
Intention
Male
manual aiming
Movement
Movement - physiology
Müller-Lyer illusion
Perceptual Motor Coordination
Photic Stimulation
Psychomotor Performance - physiology
Reference Values
Sensory perception
Spatial Ability
Specialization
Visual Perception - physiology
visuomanual
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Summary:The authors investigated whether movementplanning and feedback-processing abilities associated with the 2 hand-hemisphere systems mediate illusion-induced biases in manual aiming and saccadic eye movements. Although participants' (N = 23) eye movements were biased in the direction expected on the basis of a typical Müller-Lyer configuration, hand movements were unaffected. Most interesting, both leftand right-handers' eye fixation onset and time to hand peak velocity were earlier when they aimed with the left hand than they were when they aimed with the right hand, regardless of the availability of vision for online movement control. They thus adapted their eye-hand coordination pattern to accommodate functional asymmetries. The authors suggest that individuals apply different movement strategies according to the abilities of the hand and the hemisphere system used to produce the same outcome.
ISSN:0022-2895
1940-1027
DOI:10.3200/JMBR.39.1.9-18