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Neurosci Lett. 2017 Sep 29;658:177-181. doi: 10.1016/j.neulet.2017.08.062. Epub 2017 Aug 31.

Global motion perception is associated with motor function in 2-year-old children.

Author information

1
School of Optometry and Vision Science, University of Auckland, Auckland, New Zealand; School of Optometry and Vision Science, University of Waterloo, Waterloo, Canada. Electronic address: ben.thompson@uwaterloo.ca.
2
Liggins Institute, University of Auckland, Auckland, New Zealand; Department of Paediatrics: Youth and Child Health, University of Auckland, Auckland, New Zealand.
3
School of Optometry and Vision Science, University of Auckland, Auckland, New Zealand; School of Optometry and Vision Science, University of Waterloo, Waterloo, Canada.
4
School of Optometry and Vision Science, University of Auckland, Auckland, New Zealand.
5
Liggins Institute, University of Auckland, Auckland, New Zealand.
6
Department of Psychological Medicine, University of Auckland, Auckland, New Zealand.

Abstract

The dorsal visual processing stream that includes V1, motion sensitive area V5 and the posterior parietal lobe, supports visually guided motor function. Two recent studies have reported associations between global motion perception, a behavioural measure of processing in V5, and motor function in pre-school and school aged children. This indicates a relationship between visual and motor development and also supports the use of global motion perception to assess overall dorsal stream function in studies of human neurodevelopment. We investigated whether associations between vision and motor function were present at 2 years of age, a substantially earlier stage of development. The Bayley III test of Infant and Toddler Development and measures of vision including visual acuity (Cardiff Acuity Cards), stereopsis (Lang stereotest) and global motion perception were attempted in 404 2-year-old children (±4 weeks). Global motion perception (quantified as a motion coherence threshold) was assessed by observing optokinetic nystagmus in response to random dot kinematograms of varying coherence. Linear regression revealed that global motion perception was modestly, but statistically significantly associated with Bayley III composite motor (r2=0.06, P<0.001, n=375) and gross motor scores (r2=0.06, p<0.001, n=375). The associations remained significant when language score was included in the regression model. In addition, when language score was included in the model, stereopsis was significantly associated with composite motor and fine motor scores, but unaided visual acuity was not statistically significantly associated with any of the motor scores. These results demonstrate that global motion perception and binocular vision are associated with motor function at an early stage of development. Global motion perception can be used as a partial measure of dorsal stream function from early childhood.

KEYWORDS:

Dorsal stream; Hypoglycaemia; Infant; Motion coherence threshold; Motor activity; Newborn; Visual perception

PMID:
28864240
PMCID:
PMC5645251
DOI:
10.1016/j.neulet.2017.08.062
[Indexed for MEDLINE]
Free PMC Article

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