Infants can't discriminate the orientation of a grating surrounded by an oblique square.
We examined whether infants could visually discriminate the orientation of a grating surrounded by an oblique square (experiment 1) and a vertical square (experiment 2). A familiarisation-novelty preference procedure was used. In experiment 1, infants aged 4 to 6 months did not visually distinguish the orientation of a grating surrounded by an oblique square. However, in experiment 2, in which a vertical surrounding square was used, such infants visually distinguished the orientation of a grating. Our results suggest that the external visual frame can affect infants' perception of the orientation of a grating, as it does in adults. In experiment 1, a grating was within an oblique square. Here, the relative orientation with respect to the external visual frame differs from the orientation relative to the retinal/gravitational axes. Such discrepancy appears to cause confusion in infants' perception of orientation.
Tsuruhara
Aki
A
Department of Psychology, Chuo University, 742-1, Higashinakano, Hachioji, Tokyo 192-0393, Japan. aki.tsuruhara@gmail.com
Kanazawa
So
S
Yamaguchi
Masami K
MK
D000873:Anthracenes; D002657:Child Development; D004192:Discrimination, Psychological / Q000502:physiology*; D006801:Humans; D007223:Infant; D009949:Orientation; D010364:Pattern Recognition, Visual / Q000502:physiology*; D013028:Space Perception / Q000502:physiology*; D013223:Statistics as Topic
C546739:AnOV compound; D000873:Anthracenes