@article{dffcc799108a4ff0b0b8d7e28d1cc843,
title = "Global motion perception is independent from contrast sensitivity for coherent motion direction discrimination and visual acuity in 4.5-year-old children",
abstract = "Global motion processing depends on a network of brain regions that includes extrastriate area V5 in the dorsal visual stream. For this reason, psychophysical measures of global motion perception have been used to provide a behavioral measure of dorsal stream function. This approach assumes that global motion is relatively independent of visual functions that arise earlier in the visual processing hierarchy such as contrast sensitivity and visual acuity. We tested this assumption by assessing the relationships between global motion perception, contrast sensitivity for coherent motion direction discrimination (henceforth referred to as contrast sensitivity) and habitual visual acuity in a large group of 4.5-year-old children (n=117). The children were born at risk of abnormal neurodevelopment because of prenatal drug exposure or risk factors for neonatal hypoglycemia. Motion coherence thresholds, a measure of global motion perception, were assessed using random dot kinematograms. The contrast of the stimuli was fixed at 100% and coherence was varied. Contrast sensitivity was measured using the same stimuli by fixing motion coherence at 100% and varying dot contrast. Stereoacuity was also measured. Motion coherence thresholds were not correlated with contrast sensitivity or visual acuity. However, lower (better) motion coherence thresholds were correlated with finer stereoacuity (ρ=0.38, p=0.004). Contrast sensitivity and visual acuity were also correlated (ρ=-0.26, p=0.004) with each other. These results indicate that global motion perception for high contrast stimuli is independent of contrast sensitivity and visual acuity and can be used to assess motion integration mechanisms in children. ",
keywords = "Analysis of Variance, Child, Preschool, Contrast Sensitivity/physiology, Depth Perception/physiology, Eye Movements, Female, Humans, Longitudinal Studies, Male, Motion Perception/physiology, Photic Stimulation/methods, Psychophysics, Sensory Thresholds/physiology, Visual Acuity/physiology, Visual development, At risk infant, Preschool vision assessment, Extrastriate visual cortex",
author = "Arijit Chakraborty and Anstice, {Nicola S} and Jacobs, {Robert J} and Nabin Paudel and LaGasse, {Linda L} and Lester, {Barry M} and Wouldes, {Trecia A} and Harding, {Jane E} and Benjamin Thompson",
note = "Funding Information: Research reported in this publication was supported by the Eunice Kennedy Shriver National Institute of Child Health and Human Development of the National Institutes of Health under award number R01HD0692201 , National Institutes on Drug Abuse grants 2RO1DA014948 and RO1DA021757 and the Auckland Medical Research Foundation . We acknowledge the contribution of all members of the CHYLD Study team: Coila Bevan, Jessica Brosnahan, Ellen Campbell, Tineke Crawford, Kelly Fredell, Karen Frost, Claire Hahnhaussen, Safayet Hossin, Greg Gamble, Anna Gsell, Yannan Jiang, Kelly Jones, Sapphire Martin, Neil Micklewood, Chris McKinlay, Grace McKnight, Christina McQuoid, Janine Paynter, Raquel O. Rodrigues, Jenny Rogers, Kate Sommers, Heather Stewart, Anna Timmings, Jess Wilson, Rebecca Young, from the Liggins Institute, University of Auckland, New Zealand; Jo Arthur, Susanne Bruder, Gillian Matheson, Tzu-Ying (Sandy) Yu from the School of Optometry and Vision Science, University of Auckland, New Zealand Nataliia Burakevych, Department of Paediatrics; Child and Youth Health, University of Auckland, New Zealand. Judith Ansell, Ryan San Diego, Department of Psychological Medicine, University of Auckland, New Zealand Matthew Signal, Aaron Le Compte, Department of Engineering, University of Canterbury, New Zealand. Max Berry, Arun Nair, Ailsa Tuck, Alexandra Wallace, Phil Weston from the Department of Paediatrics, Waikato Hospital, Hamilton, New Zealand. The CHYLD Steering Group: Jane Alsweiler, Department of Paediatrics; Child and Youth Health, University of Auckland, J. Geoffery Chase, Department of Engineering, University of Canterbury, Jane Harding, Liggins Institute, University of Auckland, Deborah Harris, Newborn Intensive Care Unit, Waikato District Health Board, Benjamin Thompson, Department of Optometry and Vision Science, University of Auckland, Trecia Ann Wouldes, Department of Psychological Medicine, University of Auckland, Auckland, New Zealand. International Advisory Group: Heidi Feldman, Stanford University School of Medicine, USA; William Hay, University of Colorado School of Medicine, USA; Darrell Wilson, Stanford University School of Medicine, USA; Robert Hess, McGill Vision Research Unit, Department of Ophthalmology, McGill University, USA. We also acknowledge the members of NZ IDEAL study team: Jenny Rogers, Josephine Cliffe, Suzanne Cumming, and Heather Stewart. Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd. All rights reserved.",
year = "2015",
doi = "10.1016/j.visres.2015.08.007",
language = "English",
volume = "115",
pages = "83--91",
journal = "Vision Research",
issn = "0042-6989",
publisher = "Elsevier Limited",
}