The vestibulo-ocular reflex during active head motion in children and adolescents

被引：6
作者：
Salman, Michael S.
Lillakas, Linda
Dennis, Maureen
Steinbach, Martin J.
Sharpe, James A.
机构：
[1] Childrens Hosp, Sect Pediat Neurol, Winnipeg, MB R3A 1R9, Canada
[2] Univ Toronto, Univ Hlth Network, Vis Sci Res Program, Toronto, ON, Canada
[3] Univ Toronto, Univ Hlth Network, Div Neurol, Toronto, ON, Canada
[4] Univ Toronto, Hosp Sick Children, Div Psychol, Toronto, ON M5G 1X8, Canada
来源：
CHILDS NERVOUS SYSTEM | 2007年 / 23卷 / 11期
基金：
加拿大健康研究院; 加拿大自然科学与工程研究理事会; 美国国家卫生研究院;
关键词：
VOR; active head motion; children; eye movement; development;
D O I：
10.1007/s00381-007-0403-9
中图分类号：
R74 [神经病学与精神病学];
学科分类号：
摘要：
Background Little information is available on the performance and maturity of the vestibulo-ocular reflex (VOR) in children and adolescents during active head motion as encountered during normal locomotion. We investigated the active VOR performance in children and adolescents to determine its norm and variation with age. Methods We recorded the angular active VOR using an infrared eye tracker and a magnetic head tracker in 38 children, aged 8-19 years. Participants made sinusoidal head-on-body rotations in yaw (left-right) and pitch (up-down) at frequencies of about 0.5 and 2 Hz in the dark. Results Mean VOR gains, the ratios of eye to head velocities, were close to unity and were significantly higher at 2 Hz than at 0.5 Hz. VOR gains did not vary with age. Conclusion The angular VOR during active head motion is functionally mature in children 8 years or older at 0.5 and 2 Hz head rotations.
引用
收藏
页码：1269 / 1274
页数：6
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