Young infants' perception of the trajectories of two- and three-dimensional objects.
We investigated oculomotor anticipations in 4-month-old infants as they viewed center-occluded object trajectories. In two experiments, we examined performance in two-dimensional (2D) and three-dimensional (3D) dynamic occlusion displays and in an additional 3D condition with a smiley face as the moving target stimulus. Rates of anticipatory eye movements were not facilitated by 3D displays or by the (presumably) more salient smiley face relative to the 2D condition. However, latencies of anticipations were reduced, implying that 3D visual information may have supported formation of more robust mental representations of the moving object. Results are interpreted in a context of perceptual constraints on developing cognitive capacities during early infancy.
Department of Psychology, University of California, Los Angeles, CA 90095, USA. scott.johnson@ucla.edu
Scott P
SP
Johnson
J
J
Gavin Bremner
Alan M
AM
Slater
Sarah M
SM
Shuwairi
Uschi
U
Mason
Jo
J
Spring
Barrie
B
Usherwood
D059031:Anticipation, Psychological; D001288:Attention; D003210:Concept Formation; D003867:Depth Perception; D005133:Eye Movements; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009039:Motion Perception; D009949:Orientation; D010364:Pattern Recognition, Visual; D010470:Perceptual Masking; D002666:Psychology, Child; D011601:Psychophysics; D011930:Reaction Time; D012438:Saccades