无髓海鳗嗅觉神经纤维中的恢复产热
The recovery heat production in non-myelinated garfish olfactory nerve fibres.
作者信息
Howarth J V, Ritchie J M
出版信息
J Physiol. 1979 Jul;292:167-75. doi: 10.1113/jphysiol.1979.sp012844.
Abstract
- The recovery heat production of the non-myelinated fibres of garfish olfactory nerve has been measured. 2. At about 20 degrees C the total recovery heat was 381 +/- 26 microcal g-1 impulse-1 at a stimulation frequency of 2 sec-1. 3. The time constant of decay of the recovery heat production after a brief period of stimulation was 78.7 +/- 3.1 sec at about 20 degrees C. 4. Changing the temperature (by +/- 5 degress C) had little effect on the total recovery heat produced. 5. However, lowering the temperature reduced both the rate of rise, and the maximum rate of recovery heat production whereas the time constant of decay was increased. Raising the temperature produced corresponding changes in the opposite direction. 6. the recovery heat production measured in the present experiments is consistent with the previously measured oxygen consumption in the same preparation.
摘要
- 对长吻鼻鱼嗅神经的无髓鞘纤维的恢复产热进行了测量。2. 在约20摄氏度时，刺激频率为2秒-1时，总恢复热为381±26微卡克-1脉冲-1。3. 在约20摄氏度时，短暂刺激后恢复产热的衰减时间常数为78.7±3.1秒。4. 改变温度（±5摄氏度）对产生的总恢复热影响很小。5. 然而，降低温度会降低恢复产热的上升速率和最大速率，而衰减时间常数会增加。升高温度则会产生相反方向的相应变化。6. 本实验中测量的恢复产热与同一标本先前测量的耗氧量一致。
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