Adults present a large number of asymmetries in visuospatial behavior that are known to be supported by functional brain lateralization. Although there is evidence of lateralization for motor behavior and language processing in infancy, no study has explored visuospatial attention biases in the early stages of development. In this study, we tested for the presence of a leftward visuospatial bias (i.e., pseudoneglect) in 4- and 5-month-old infants using an adapted version of the line bisection task. Infants were trained to identify the center of a horizontal line (Experiment 1) while their eye gazes were monitored using a remote eyetracking procedure to measure their potential gazing error. Infants exhibited a robust pseudoneglect, gazing leftward with respect to the veridical midpoint of the horizontal line. To investigate whether infants’ pseudoneglect generalizes to any given object or is dependent on the horizontal dimension, in Experiment 2 we assessed infants’ gaze deployment in vertically oriented lines. No leftward bias was found, suggesting that early visuospatial attention biases in infancy are constrained by the orientation of the visual plane in which the information is organized. The interplay between biological and cultural factors that might contribute to the early establishment of the observed leftward bias in the allocation of visuospatial attention is discussed.

Nava, E., de Hevia, M., Bulf, H., & Macchi Cassia, V. (2022). Signatures of functional visuospatial asymmetries in early infancy. JOURNAL OF EXPERIMENTAL CHILD PSYCHOLOGY, 215, 1-19 [10.1016/j.jecp.2021.105326].

Signatures of functional visuospatial asymmetries in early infancy

Nava, E
;
Bulf, H;Macchi Cassia, V
2022

Abstract

Adults present a large number of asymmetries in visuospatial behavior that are known to be supported by functional brain lateralization. Although there is evidence of lateralization for motor behavior and language processing in infancy, no study has explored visuospatial attention biases in the early stages of development. In this study, we tested for the presence of a leftward visuospatial bias (i.e., pseudoneglect) in 4- and 5-month-old infants using an adapted version of the line bisection task. Infants were trained to identify the center of a horizontal line (Experiment 1) while their eye gazes were monitored using a remote eyetracking procedure to measure their potential gazing error. Infants exhibited a robust pseudoneglect, gazing leftward with respect to the veridical midpoint of the horizontal line. To investigate whether infants’ pseudoneglect generalizes to any given object or is dependent on the horizontal dimension, in Experiment 2 we assessed infants’ gaze deployment in vertically oriented lines. No leftward bias was found, suggesting that early visuospatial attention biases in infancy are constrained by the orientation of the visual plane in which the information is organized. The interplay between biological and cultural factors that might contribute to the early establishment of the observed leftward bias in the allocation of visuospatial attention is discussed.
Articolo in rivista - Articolo scientifico
Scientifica
Eye tracking; Infancy; Leftward bias; Pseudoneglect; Spatial asymmetry; Visuo-spatial functions;
English
Nava, E., de Hevia, M., Bulf, H., & Macchi Cassia, V. (2022). Signatures of functional visuospatial asymmetries in early infancy. JOURNAL OF EXPERIMENTAL CHILD PSYCHOLOGY, 215, 1-19 [10.1016/j.jecp.2021.105326].
Nava, E; de Hevia, M; Bulf, H; Macchi Cassia, V
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/349646
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