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6 x 9, illustrated
ISSN
0899-7667
E-ISSN
1530-888X
2014 Impact factor:
2.21

Neural Computation

November 2014, Vol. 26, No. 11, Pages 2652-2668
(doi: 10.1162/NECO_a_00645)
@ 2014 Massachusetts Institute of Technology
Visual Motion Priors Differ for Infants and Mothers
Article PDF (643.44 KB)
Abstract

Visual motion direction ambiguities due to edge-aperture interaction might be resolved by speed priors, but scant empirical data support this hypothesis. We measured optic flow and gaze positions of walking mothers and the infants they carried. Empirically derived motion priors for infants are vertically elongated and shifted upward relative to mothers. Skewed normal distributions fitted to estimated retinal speeds peak at values above 20°/sec.