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Synaptic responses andintraganglionic connections of rat superior cervical ganglia neurones
H.E. Purnyn, O.V. Rikhalsky, S.A. Fedulova, M.S. Veselovsky
O.O. Bogomoletz Institute of Physiology, National Academyof Sciences of Ukraine, Kyiv
Abstract
The rat superior cervical ganglion (SCG) neurones demonstrate
responses on the threshold stimulation of the cervical
sympathetic nerve, extrinsic (ECN) and intrinsic (ICN) carotid
nerves. Both antidromic and synaptic responses were evoked
by antidromic stimulation of ECN and ICN. The synaptic
responses of each neuron differ by great variability amplitudes
of the excitatory postsynaptic potentials and the
currents, the rise time and the time constant decay of the
postsynaptic current. We hypothesize that this variability of
the synaptic responces is associated with the spatial distribution
of synapses on the dendritic tree and on the neuron soma
that are innervated by the single axon.
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© National Academy of Sciences of Ukraine, Bogomoletz Institute of Physiology, 2014-2024.
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