采用同步范式测定的差异垂直视觉潜伏期。
Differential vertical visual latency as determined with a simultaneity paradigm.
作者信息
Patel Shephali, Schwartz Steven H, Swanson William H
机构信息
State College of Optometry, State University of New York, 33 West 42nd Street, New York, NY 10036, USA.
出版信息
Vision Res. 2010 Mar 5;50(5):534-40. doi: 10.1016/j.visres.2009.12.010. Epub 2009 Dec 23.
Behavioral studies, as well as anatomical and physiological data, suggest differences in functionality for inferior and superior visual fields. Previous investigations comparing latencies of the two fields have employed motor reaction times. This approach is of limited usefulness in elderly clinical populations where various degrees of motor impairment may be present. In this report, we describe a simultaneity paradigm that allows the determination of relative latencies without dependence on motor reaction times. A slightly, but statistically significant, shorter latency (3.9+/-5.9ms) was found for the superior visual field. The results are not affected by age, and both within- and between-session variability are low.
行为学研究以及解剖学和生理学数据表明，下视野和上视野在功能上存在差异。以往比较两个视野潜伏期的研究采用了运动反应时间。这种方法在可能存在不同程度运动障碍的老年临床人群中用处有限。在本报告中，我们描述了一种同步范式，该范式可以在不依赖运动反应时间的情况下确定相对潜伏期。结果发现上视野的潜伏期略短（3.9±5.9毫秒），但具有统计学意义。结果不受年龄影响，且组内和组间变异性均较低。
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