Calvillo O
Can J Physiol Pharmacol. 1978 Feb;56(1):154-7. doi: 10.1139/y78-020.
The excitability of primary afferent terminals of cutaneous C fibres was tested in the spinal cord of decerebrated cats. C fibre terminal excitability was decreased in the spinal state, and increased by conditioning volleys that activated only A fibres of another cutaneous nerve and by stimulating hair mechanically. It is suggested that C fibre input and therefore nociceptive information to the central nervous system is susceptible to presynaptic control by segmental and suprasegmental mechanisms.
在去大脑猫的脊髓中测试了皮肤C纤维初级传入终末的兴奋性。在脊髓状态下，C纤维终末兴奋性降低，而通过仅激活另一条皮肤神经的A纤维的条件性群集以及机械刺激毛发可使其兴奋性增加。提示C纤维输入以及因此向中枢神经系统的伤害性信息易受节段性和节段上机制的突触前控制。
