Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4035687 | Vision Research | 2007 | 9 Pages |
Abstract
Any object may contain at least two spatio-temporal components referred to as first- and second-order, respectively, defined by spatial-temporal luminance modulation or by contrast, texture or depth modulation. This study investigates form sensitivity of infants, normals, premature or strabismic. A two-alternative forced-choice preferential looking procedure was used in monocular and binocular condition. Maturation profile for both stimuli was similar in the control group. Strabismic infants showed a vertical offset in maturation, which affected the second-order more severely. The pre-term group showed a lag of second-order sensitivity. Our results underline differences between first- and second-order processing.
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Authors
Delphine Thibault, Odile Brosseau-Lachaine, Jocelyn Faubert, François Vital-Durand,