R. E. Bychkov

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Two inhibitory heart motor neurons (HI-1, HI-2) were identified in the visceral ganglion of the snail Achatina fulica. Both motor neurons were connected monosynaptically with the myocardium. Irregular action potentials composed a typical pattern of neuronal spontaneous electrical activity. The neurons shared common excitatory synaptic inputs, and were(More)
The excitatory motor unit of Achatina fulica is composed of five identified cardioregulatory motor neurons: three tonically active neurons (TAN-1, -2 and -3), a periodically oscillating neuron (PON) and a VG1 neuron. High frequency discharges in TAN neurons evoked slow depolarization waves. The PON elicited biphasic excitatory post synaptic potentials(More)
5 cardiostimulating neurons belonging to 3 different functional groups were studied in visceral and right parietal ganglia of the African snail. The cell VG-1 formerly believed to be an interneuron, was shown to be a motoneuron of the heart producing the EPSPs in the myocardium. The data obtained show a considerable similarity in organization of the(More)
The viscerocardiac and cardiocardiac reflexes in the snail are effectuated by just two inhibitory motoneurons of the visceral ganglion. The neurons are switched on in parallel and have extensive, partially overlapping receptive fields. Due to the high degree of sensitivity of the nerve endings of these cells to mechanical stimuli, the inhibitory motoneurons(More)
Only two inhibitory neurons in the visceral ganglia provide the viscero-cardial and cardio-cardial reflexes of Helix pomatia. These neurons are connected in parallel and do not interact with each other. The cells have extensive receptive fields in all visceral organs which are considerably overlapped. These inhibitory neurons can provide the afferent(More)
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