Graubard K, Raper J A, Hartline D K
Proc Natl Acad Sci U S A. 1980 Jun;77(6):3733-5. doi: 10.1073/pnas.77.6.3733.
Graded synaptic transmission occurs between spiking neurons of the lobster stomatogastric ganglion. In addition to eliciting spike-evoked inhibitory potentials in postsynaptic cells, these neurons also release functionally significant amounts of transmitter below the threshold for action potentials. The spikeless postsynaptic potentials grade in amplitude with presynaptic voltage and can be maintained for long periods. Graded synaptic transmission can be modulated by synaptic input to the presynaptic neuron.
分级突触传递发生在龙虾口胃神经节的脉冲神经元之间。除了在突触后细胞中引发与动作电位相关的抑制性电位外,这些神经元还在动作电位阈值以下释放功能上显著量的神经递质。无动作电位的突触后电位的幅度随突触前电压分级变化,并且可以长时间维持。分级突触传递可由突触前神经元的突触输入进行调节。