Orientational anisotropy in infant vision

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Science  28 Nov 1975:
Vol. 190, Issue 4217, pp. 900-902
DOI: 10.1126/science.1188370


Infants prefer to look at horizontal and vertical gratings rather than at oblique gratings only when they are at or near threshold spatial frequencies, as would be expected if acuity for oblique edges is lower than that for horizontal and vertical edges. That such a bias exists as early as 6 weeks of age suggests that the orientational asymmetry of the visual system depends on endogenous maturation rathat than exposure to a carpentered world.