Related Experiment Video
Updated: Jun 17, 2026

Exploring Infant Sensitivity to Visual Language using Eye Tracking and the Preferential Looking Paradigm
Published on: May 15, 2019
Asymmetric perception of radial expansion/contraction in Japanese macaque (Macaca fuscata) infants
Nobu Shirai1, Tomoko Imura, Yuko Hattori
1Department of Psychology, Faculty of Humanities, Niigata University, 2-8050 Ikarashi, Nishi-ku Niigata-city, Niigata 950-2181, Japan. shirai@human.niigata-u.ac.jp
Abstract:
Visual radial expansion/contraction motion provides important visual information that is used to control several adaptive actions. We investigated radial motion perception in infant Japanese macaque monkeys using an experimental procedure previously developed for human infants. We found that the infant monkeys' visual preference for the radial expansion pattern was greater than that for the radial contraction pattern. This trend towards an "expansion bias" is similar to that observed in human infants. These results suggest that asymmetrical radial motion processing is a basic visual function common to primates, and that it emerges early in life.
Related Concept Videos
Facial Feedback Hypothesis
Perception of Sound Waves
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same frequency...
Socioemotional Development during Infancy
Primary Temperament Types
Stella Chess...
Assessment of apical radial pulse
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
Expansion and Contraction in Masonry Walls
To...

