Features of action potentials and synaptic potentials as obtained by intracellular recordings from the sympathetic ganglion cells in the superior cervical ganglion of both the rat and the guinea-pig are described. Time-constant, imput resistance and capacitance of the ganglion cell membrane were also measured. Rheobasic currents and chronaxies are evaluated from strength-latency recordings. Single stimulating shocks applied to pre-ganglionic fibres produce repeated activation in the sympathetic ganglion cells and neuron response appear to be dispersed over a considerable length of time. Simultaneous recordings of extracellular post-ganglionic discharge and intracellular response from single ganglion units showed that pre-ganglionic fibres with different conduction velocities converge on the neurons. This convergence can fully justify the temporal dispersion of the ganglion cell responses. © 1970 Springer-Verlag.
Features of action potentials and synaptic potentials as obtained by intracellular recordings from the sympathetic ganglion cells in the superior cervical ganglion of both the rat and the guinea-pig are described. Time-constant, imput resistance and capacitance of the ganglion cell membrane were also measured. Rheobasic currents and chronaxies are evaluated from strength-latency recordings. Single stimulating shocks applied to pre-ganglionic fibres produce repeated activation in the sympathetic ganglion cells and neuron response appear to be dispersed over a considerable length of time. Simultaneous recordings of extracellular post-ganglionic discharge and intracellular response from single ganglion units showed that pre-ganglionic fibres with different conduction velocities converge on the neurons. This convergence can fully justify the temporal dispersion of the ganglion cell responses. © 1970 Springer-Verlag.
Electrical properties and synaptic connections of the sympathetic neurons in the rat and guinea-pig superior cervical ganglion
PERRI, Virgilio;SACCHI, Oscar;
1970
Abstract
Features of action potentials and synaptic potentials as obtained by intracellular recordings from the sympathetic ganglion cells in the superior cervical ganglion of both the rat and the guinea-pig are described. Time-constant, imput resistance and capacitance of the ganglion cell membrane were also measured. Rheobasic currents and chronaxies are evaluated from strength-latency recordings. Single stimulating shocks applied to pre-ganglionic fibres produce repeated activation in the sympathetic ganglion cells and neuron response appear to be dispersed over a considerable length of time. Simultaneous recordings of extracellular post-ganglionic discharge and intracellular response from single ganglion units showed that pre-ganglionic fibres with different conduction velocities converge on the neurons. This convergence can fully justify the temporal dispersion of the ganglion cell responses. © 1970 Springer-Verlag.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
