Postganglionic stimulation activates synaptic potentials in cat bladder parasympathetic neurons.

Responses elicited by stimulating the pre-versus postganglionic nerves were compared in cat bladder parasympathetic neurons. We observed that synaptic potentials recorded on stimulating the postganglionic nerve trunk were different from those elicited with preganglionic nerve stimulation. These findings suggest that local neuronal interactions occur within bladder parasympathetic ganglia and may play a physiological role in the neuronal integration in bladder ganglia.