Smooth pursuit development in infants.

M Jacobs; C M Harris; F Shawkat; D Taylor

doi:10.1111/j.1442-9071.1997.tb01392.x

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PubMed · 9296293

Smooth pursuit development in infants.

M Jacobs·C M Harris·F Shawkat·D Taylor

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Abstract

PURPOSE: We set out to assess the development of pursuit eye movements in normal infants in an objective, longitudinal fashion. We asked whether smooth pursuit (SP) was present under 2 months of age and how the saccade ratio changed with increasing infant age. METHODS: Smooth pursuit was recorded longitudinally from 25 infants aged 1-7 months, using DC electro-oculography, in a clinically practical manner. Four uninstructed adults acted as controls. RESULTS: Smooth pursuit was present under 2 months of age. The gain of SP increased with increasing infant age. However, it had still not reached adult levels by 6 months of age. Latency decreased with increasing infant age. Monocular SP asymmetry was present in the younger infants. CONCLUSIONS: Smooth pursuit is present under 2 months of age, but at 6 months SP has still not reached adult levels. The traditional model of SP development is questionable.

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Child Development Electrooculography Head Movements Humans Infant Infant, Newborn Longitudinal Studies Pursuit, Smooth Saccades Journal Article Research Support, Non-U.S. Gov't

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M Jacobs, C M Harris, F Shawkat, D Taylor. 1997. Smooth pursuit development in infants.. https://doi.org/10.1111/j.1442-9071.1997.tb01392.x

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