Visual Control of Reaching and Grasping in Infants

The role of visual input during reaching and grasping was evaluated. Groups of infants (5, 7, and 9 months old) and adults reached for an illuminated object that sometimes darkened during the reach. Behavioral and kinematic measures were assessed during transport and grasp. Both infants and adults c...

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Veröffentlicht in:Developmental psychology 1999-05, Vol.35 (3), p.620-631
Hauptverfasser: McCarty, Michael E, Ashmead, Daniel H
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container_title Developmental psychology
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creator McCarty, Michael E
Ashmead, Daniel H
description The role of visual input during reaching and grasping was evaluated. Groups of infants (5, 7, and 9 months old) and adults reached for an illuminated object that sometimes darkened during the reach. Behavioral and kinematic measures were assessed during transport and grasp. Both infants and adults could complete a reach and grasp to a darkened object. However, vision was used during the reach when the object remained visible. Infants contacted the object more often when it remained visible, though they had longer durations and more movement units. In contrast, adults reached faster and more precisely during transport and grasp when the object remained visible. Thus, continuous sight of the object was not necessary, but when it was available, infants used it for contacting the object whereas adults used it to reach and grasp more efficiently.
doi_str_mv 10.1037/0012-1649.35.3.620
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Groups of infants (5, 7, and 9 months old) and adults reached for an illuminated object that sometimes darkened during the reach. Behavioral and kinematic measures were assessed during transport and grasp. Both infants and adults could complete a reach and grasp to a darkened object. However, vision was used during the reach when the object remained visible. Infants contacted the object more often when it remained visible, though they had longer durations and more movement units. In contrast, adults reached faster and more precisely during transport and grasp when the object remained visible. 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source Applied Social Sciences Index & Abstracts (ASSIA); MEDLINE; EBSCOhost APA PsycARTICLES; Periodicals Index Online
subjects Adult
Adults
Age Differences
Age Factors
Babies
Biological and medical sciences
Biomechanical Phenomena
Child development
Child psychology
Comparative Analysis
Developmental psychology
Eye Hand Coordination
Eyes & eyesight
Fundamental and applied biological sciences. Psychology
Grasping
Hand Strength - physiology
Human
Humans
Illumination
Infant
Infant Behavior
Infant Behavior - psychology
Infants
Motor Development
Motor Performance
Motor Skills - physiology
Newborn. Infant
Perceptual Motor Coordination
Perceptual Motor Processes
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Reaching
Reaching Behavior
Stimulus Variability
Time Factors
Visual Feedback
Visual information factors
Visual Perception
Visual Perception - physiology
Visual Stimulation
Visual Stimuli
title Visual Control of Reaching and Grasping in Infants
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