[Neuronal activity of the frog medulla oblongata in response to chemical stimulation of gustatory and cutaneous chemoreceptors].

The unit activity of medulla oblongata extracellularly recorded during stimulation of the taste receptors and skin chemoreceptors with solutions of the hydrochloric and citric acids, sodium chloride and potassium chloride, in the majority of neurons responded at least to the solutions of one acid and one salt. The number of units which responded to all the solutions was twice as high on stimulation of taste receptors than skin chemoreceptors. The chemical stimuli graduation analysis is more suitable in the case of taste receptor stimulation. The peculiarities of the primary center unit activity response to the stimulation of the receptive fields in question may be connected with different role of taste and skin chemoreceptors in adaptive behaviour.