NDLI: Effects of support surface and optic flow on step-like movements in pre-crawling and crawling infants.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Anderson, David I. Kobayashi, Yuka Hamel, Kate Rivera, Monica Campos, Joseph J. Barbu-Roth, Marianne
Description	Author Affiliation: Anderson DI ( Department of Kinesiology, San Francisco State University, San Francisco, CA, United States. Electronic address: danders@sfsu.edu.); Kobayashi Y ( Department of Kinesiology, San Francisco State University, San Francisco, CA, United States.); Hamel K ( Department of Kinesiology, San Francisco State University, San Francisco, CA, United States.); Rivera M ( Department of Physical Therapy, California State University, Fresno, CA, United States.); Campos JJ ( Institute of Human Development, University of California, Berkeley, CA, United States.); Barbu-Roth M ( Laboratoire Psychologie de la Perception-UMR 8242 CNRS-Université Paris Descartes, Paris, France.)
Abstract	Step-like movements were examined in pre-crawling (n=9) and crawling (n=9) 6-13 month-old infants in the air and on a surface in response to a static pattern or optic flows that moved toward or away from the infant. Infants completed six 60-s trials. A significant interaction between locomotor status and support condition revealed that pre-crawling infants made more step-like movements in the air than on a rigid surface. In contrast, crawling infants made an equivalent number of step-like movements in the air and on the surface. Optic flow did not influence the number of step-like movements made by infants. The pre-crawling infant finding is consistent with a finding in a previous study in which two month-old infants were shown to step more in the air than on the ground. This finding is discussed relative to the idea that the infant stepping pattern disappears because the legs become too heavy to lift.
File Format	HTM / HTML
ISSN	01636383
Volume Number	42
e-ISSN	19348800
Journal	Infant Behavior and Development
Language	English
Publisher	Elsevier
Publisher Date	2016-02-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Behavioral Sciences Discipline Pediatrics Child Development Physiology Optic Flow Psychomotor Performance Touch Humans Infant Leg Movement Journal Article Research Support, N.i.h., Extramural Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Developmental and Educational Psychology

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