The development of depth perception from motion parallax in infancy

North Dakota State University, Fargo, North Dakota Little is known about infants' perception of depth from motion parallax, even though it is known that infants are sensitive both to motion and to depth-from-motion cues at an early age. The present experiment assesses whether infants are sensit...

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Bibliographic Details
Published in:Attention, perception & psychophysics perception & psychophysics, 2009, Vol.71 (1), p.194-199
Main Authors: Nawrot, Elizabeth, Mayo, Sherryse L., Nawrot, Mark
Format: Article
Language:English
Subjects:
Adults
Age Factors
Attention
Behavioral Science and Psychology
Biological and medical sciences
Child development
Cognitive Psychology
Communication disorders
Cues
Depth Perception
Developmental psychology
Discrimination Learning
Eye movements
Female
Fundamental and applied biological sciences. Psychology
Habituation
Habituation, Psychophysiologic
Humans
Infant
Kinetics
Male
Motion
Motion Perception
Motor Reactions
Newborn. Infant
Pattern Recognition, Visual
Psychology
Psychology, Child
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
R&D
Research & development
Spatial Ability
Stimuli
Studies
Vision, Binocular
Visual Environment
Young Children
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Summary:North Dakota State University, Fargo, North Dakota Little is known about infants' perception of depth from motion parallax, even though it is known that infants are sensitive both to motion and to depth-from-motion cues at an early age. The present experiment assesses whether infants are sensitive to the unambiguous depth specified by motion parallax and, if so, when this sensitivity first develops. Eleven infants were followed longitudinally from 8 to 29 weeks. Infants monocularly viewed a translating Rogers and Graham (1979) random-dot stimulus, which appears as a corrugated surface to adult observers. Using the infant-control habituation paradigm, looking time was recorded for each 10-sec trial until habituation, followed by two test trials: one using a depth-reversed and one using a flat stimulus. Dishabituation results indicate that infants may be sensitive to unambiguous depth from motion parallax by 16 weeks of age. Implications for the developmental sequence of depth from motion, stereopsis, and eye movements are discussed.
ISSN:1943-3921
0031-5117
1943-393X
1532-5962
DOI:10.3758/APP.71.1.194