Sensitivity to rotational motion in early infancy.
Sensitivity to rotational motion, one of the fundamental components of optic flow, was tested in infants aged 2 and 3 months. The infants in both groups showed significant sensitivity to rotational motion only in the high-speed condition (10.62 degrees/s). There was no significant increase in motion sensitivity between 2 and 3 months of age, indicating that there is not a significant developmental change during this period. A comparison of our results with previous findings that showed a significant increase in radial motion sensitivity between 2 and 3 months suggests that different motion sensitivities have different developmental time courses.
Shirai
Nobu
N
Department of Psychology, Tokyo Metropolitan University, 1-1 minamiohsawa, Hachiohji, Tokyo, 192-0397, Japan. n_shirai@tmu.ac.jp
Kanazawa
So
S
Yamaguchi
Masami K
MK
D000054:Acceleration; D000222:Adaptation, Physiological / Q000502:physiology*; D000375:Aging / Q000502:physiology*; D001921:Brain / Q000254:growth & development*; D005133:Eye Movements / Q000502:physiology; D006801:Humans; D007223:Infant; D009039:Motion Perception / Q000502:physiology*; D009473:Neuronal Plasticity / Q000502:physiology*; D009483:Neuropsychological Tests; D009949:Orientation / Q000502:physiology; D010775:Photic Stimulation; D012399:Rotation; D012684:Sensory Thresholds / Q000502:physiology; D013997:Time Factors; D014795:Visual Pathways / Q000254:growth & development