Himi T, Igarashi M, Kulecz W B, Kataura A
Department of Otorhinolaryngology and Communicative Sciences, Baylor College of Medicine, Houston, Texas.
Acta Otolaryngol. 1988 Mar-Apr;105(3-4):312-7. doi: 10.3109/00016488809097013.
Asymmetry of vertical optokinetic after-nystagmus (OKAN) was studied in 6 squirrel monkeys. The slow-phase eye velocity (SPEV) of upward OKAN first-phase (OKAN-I) increased with increasing stimulus velocity, whereas the SPEV of downward OKAN-I diminished. The time constant of OKAN-I was shortened with the increase in stimulus speed in both directions. With a downward stimulus, the short stimulus duration failed to produce OKAN second-phase (OKAN-II) (upward slow-phase); however, with an increase in stimulus duration, the percentage appearance increased. There was no change in percentage appearance, regardless of the duration of upward stimulus. The asymmetry of OKAN-I and that of OKAN-II differed to a certain degree.
对6只松鼠猴的垂直视动性眼震后眼震（OKAN）不对称性进行了研究。向上OKAN第一阶段（OKAN-I）的慢相眼速度（SPEV）随刺激速度增加而增加，而向下OKAN-I的SPEV则减小。双向刺激速度增加时，OKAN-I的时间常数均缩短。向下刺激时，短刺激持续时间未能产生OKAN第二阶段（OKAN-II）（向上慢相）；然而，随着刺激持续时间增加，出现的百分比增加。向上刺激持续时间无论长短，出现百分比均无变化。OKAN-I和OKAN-II的不对称性在一定程度上有所不同。
