Ross R G, Radant A D, Hommer D W
Department of Psychiatry, University of Washington, Seattle.
J Am Acad Child Adolesc Psychiatry. 1993 Jul;32(4):783-91. doi: 10.1097/00004583-199307000-00012.
To examine age-related changes in smooth pursuit tracking.
Using infrared occulography, smooth pursuit eye movements are examined in 53 normal 7- to 15-year-old children during 6 degrees and 12 degrees/second visual pursuit. In addition to smooth pursuit gain and saccadic frequency, measures of mean amplitude per second are introduced to facilitate comparison across age and target speed.
The 6 degrees/second task is found to be easier than the 12 degrees/second task. Age is correlated with smooth pursuit system performance but not saccadic system performance during 12 degrees/second pursuit. No measure correlates with age during 6 degrees/second pursuit.
Eye movements improve as children age. The future use of smooth pursuit eye movements to study children and adolescents with and at risk for schizophrenia must control for developmental changes.
研究平稳跟踪随年龄的变化。
使用红外眼动描记法，对53名7至15岁正常儿童在6度/秒和12度/秒视觉跟踪过程中的平稳跟踪眼动进行检查。除了平稳跟踪增益和扫视频率外，还引入了每秒平均幅度的测量方法，以方便跨年龄和目标速度进行比较。
发现6度/秒任务比12度/秒任务更容易。在12度/秒跟踪过程中，年龄与平稳跟踪系统性能相关，但与扫视系统性能无关。在6度/秒跟踪过程中，没有测量指标与年龄相关。
随着儿童年龄增长，眼动能力会提高。未来在研究患有精神分裂症及有精神分裂症风险的儿童和青少年时，使用平稳跟踪眼动必须控制发育变化的影响。
