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Postural, Visual, and Manual Coordination in the Development of Prehension
Author(s) -
Rachwani Jaya,
Herzberg Orit,
Golenia Laura,
Adolph Karen E.
Publication year - 2019
Publication title -
child development
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.103
H-Index - 257
eISSN - 1467-8624
pISSN - 0009-3920
DOI - 10.1111/cdev.13282
Subject(s) - psychology , task (project management) , eye–hand coordination , gaze , hand position , physical medicine and rehabilitation , trunk , object (grammar) , cognitive psychology , communication , computer vision , artificial intelligence , computer science , neuroscience , medicine , ecology , management , psychoanalysis , economics , biology
We investigated the real‐time cascade of postural, visual, and manual actions for object prehension in 38 6‐ to 12‐month‐old infants (all independent sitters) and eight adults. Participants’ task was to retrieve a target as they spun past it at different speeds on a motorized chair. A head‐mounted eye tracker recorded visual actions and video captured postural and manual actions. Prehension played out in a coordinated sequence of postural–visual–manual behaviors starting with turning the head and trunk to bring the toy into view, which in turn instigated the start of the reach. Visually fixating the toy to locate its position guided the hand for toy contact and retrieval. Prehension performance decreased at faster speeds, but quick planning and implementation of actions predicted better performance.