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Updated: Jul 13, 2026

A View of Their Own: Capturing the Egocentric View of Infants and Toddlers with Head-Mounted Cameras
Published on: October 5, 2018
Frame of reference for visual perception in young infants during change of body position
Keisuke Kushiro1, Gentaro Taga, Hama Watanabe
1Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-Nihonmatsucho, Sakyo-ku, Kyoto 606-8501, Japan.
Insights
Infants aged 3-4 months rely more on their egocentric reference frame than the allocentric reference frame when perceiving dynamic visual displays. This suggests infants prioritize retinal coordinates over environmental coordinates when body position changes.
Area of Science:
- Developmental psychology
- Neuroscience
- Visual perception
Background:
- Infant visual and vestibular systems are functional early in life.
- Infants may perceive dynamic visual stimuli using either egocentric (retinal) or allocentric (environmental) reference frames.
- It remains unclear which frame of reference infants prioritize when these conflict due to body position changes.
Purpose of the Study:
- To investigate whether 3-4 month old infants use egocentric or allocentric reference frames when processing dynamic visual displays with incongruent reference frames.
- To determine if infants detect novelty based on retinal or environmental coordinates following a change in body position.
Main Methods:
- Habituation-dishabituation procedure with 20 infants aged 3-4 months.
- Infants were habituated to a horizontally moving character in the right-side-down position (RSDp).
- Body position was altered (upright position (UPp) or continued RSDp), followed by presentation of spatially identical or rotated displays to assess visual preference.
Main Results:
- Infants demonstrated novelty detection based on changes in the retinal coordinate (egocentric frame).
- They looked longer at displays that changed on the retinal coordinate compared to the environmental coordinate.
- This indicates a preference for the egocentric reference frame in dynamic visual perception.
Conclusions:
- Changes in body position create incongruence between egocentric and allocentric frames for infants.
- Infants aged 3-4 months appear to rely more heavily on the egocentric reference frame for perceiving dynamic visual information.
- This finding sheds light on early visual processing and spatial orientation development.
Abstract:
The visual and vestibular systems begin functioning early in life. However, it is unclear whether young infants perceive the dynamic world based on the retinal coordinate (egocentric reference frame) or the environmental coordinate (allocentric reference frame) when they encounter incongruence between frames of reference due to changes in body position. In this study, we performed the habituation-dishabituation procedure to assess novelty detection in a visual display, and a change in body position was included between the habituation and dishabituation phases in order to test whether infants dishabituate to the change in stimulus on the retinal or environmental coordinate. Twenty infants aged 3-4 months were placed in the right-side-down position (RSDp) and habituated to an animated human-like character that walked horizontally in the environmental frame of reference. Subsequently, their body position was changed in the roll plane. Ten infants were repositioned to the upright position (UPp) and the rest, to the RSDp after rotation. In the test phase, the displays that were spatially identical to those shown in the habituation phase and 90 degrees rotated displays were alternately presented, and visual preference was examined. The results revealed that infants looked longer at changes in the display on the retinal coordinate than at changes in the display on the environmental coordinate. This suggests that changes in body position from lying to upright produced incongruence of the egocentric and allocentric reference frames for perception of dynamic visual displays and that infants may rely more on the egocentric reference frame.
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