a波的最小潜伏期。
The minimum latency of the a-wave.
作者信息
Arden G B, Ikeda H
出版信息
J Physiol. 1968 Aug;197(3):529-49. doi: 10.1113/jphysiol.1968.sp008573.
Abstract
- Intense flashes of light evoke early and late receptor potentials from albino rat eyes.2. When the temperature is lowered the amplitude of the early receptor potential (e.r.p.) is found to decrease much more than that of the a-wave. Below 5 degrees the a-wave can be seen without a preceding negative e.r.p.3. The a-wave, but not the e.r.p., is suppressed by an intense flash, so that subsequent stimuli only evoke e.r.p.s.4. The responses of such light-adapted eyes have been used to determine the contribution of the a-wave to the response of dark-adapted eyes.5. These calculated a-waves begin during the e.r.p. with an initial portion which is biphasic.6. The initial portion has a temperature dependence similar to that of the a-wave. It is not related to the photoreversal of rhodopsin caused by the stimulating flashes.7. The minimum latency of the a-wave, extrapolated to body temperature, is approximately 300 musec.8. The site and mode of generation of the a-wave is discussed.
摘要
强光闪烁可诱发白化大鼠眼睛产生早期和晚期感受器电位。
当温度降低时，发现早期感受器电位（e.r.p.）的幅度比a波的幅度下降得更多。在5摄氏度以下，可以看到a波而没有先前的负性e.r.p.。
强光闪烁会抑制a波，但不会抑制e.r.p.，因此随后的刺激只会诱发e.r.p.。
这种光适应眼睛的反应已被用于确定a波对暗适应眼睛反应的贡献。
这些计算出的a波在e.r.p.期间开始，其初始部分是双相的。
初始部分具有与a波相似的温度依赖性。它与刺激闪光引起的视紫红质光逆转无关。
外推至体温时，a波的最小潜伏期约为300微秒。
讨论了a波的产生部位和方式。
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