| Abstract: | Characteristics of the right partietal ganglion neuron of the gastropod molluskLymnaea
stagnalis (RPD1) were investigated by intracellular staining with Lucifer Yellow. Branches proceeding from this neuron are found in nerves of the right parietal, visceral, cerebral, and pedal ganglia of the central nervous system (CNS) as well as along peripheral nerves. Concentrations of RPD1 neurite branches were revealed in the distal, right parietal, and pleural ganglia. Electrophysiological techniques were used to investigate neuronal response to adequate stimulation of different sensory organs and cutaneous coverings (tentacles, lips, mantle, and so on). It was found that RPD1 has wide-ranging polymodal sensory input and responds to adequate stimulation of mechano-, chemo-, and photoreceptors of cutaneous coverings of the head of mantle. Stimulus application produced either subthreshold summated EPSP or a spike response in the neuron. Response in this unit during blockade of chemical synaptic transmission at peripheral and central regions of the nervous system is analyzed.A. A. Ukhtomskii Physiological Institute, A. A. Zhdanov State University, Leningrad. Translated from Neirofiziologiya, Vol. 20, No. 6, pp. 785–793, November–December, 1988. |
