| Abstract: | It was shown by intracellular recording of the activity of olfactory bulb neurons of the carp that their dendrites are excited both by synaptic activation and by direct stimulation with an electric current. The dendrites generate an action potential and probably conduct it for some distance toward the soma. The neurons can be divided into two groups: one responds to ortho- and antidromic stimuli with one, rarely with two peaks, the other responds with a rhythmical discharge. The presence of early and late IPSP is characteristic of neurons of both groups. Rhythmical variations in potential with a frequency of 26–33/sec, so-called oscillations, are recorded; they may be excitatory (in secondary neurons they correspond to EPSP) or inhibitory (they correspond to IPSP). Possible mechanisms of the excitatory oscillations and the rhythmical discharge in olfactory bulb neurons of the carp are discussed.M. V. Lomonosov Moscow State University. Translated from Neirofiziologiya, Vol.3, No.5, pp. 505–511, September–October, 1971. |
