[Response of membranes of mechanosensitive neurons in Astacus astacus to the intracellular injections of solutions under pressure]. / Reaktsii membrany mekhanochuvstvitel'nogo neirona rechnogo raka (Astacus astacus) na vnutrikletochnuiu in''ektsiiu rastvorov pod davleniem.

Injections of iso- and hypertonic solutions of some potassium salts caused an obvious depolarisation and reduction of electrical resistance in the crayfish slowly adapting stretch receptor neurones' membrane. This response could be eliminated with gadolinium. The stretch-activated channels in the crayfish stretch receptor neurone seem to be affected by an intracellular hydrostatic pressure.

[The transformation of the receptor potential of mechanosensitive neurons in the crayfish with the intracellular injection of solutions under pressure]. / Preobrazovanie retseptornogo potentsiala mekhanochuvstvitel'nykh neironov raka v usloviiakh vnutrikletochnoi in''ektsii rastvorov pod davleniem.

Intracellular pressure injection of potassium salt solution has been studied for its effect on the receptor potential of the slowly adapting stretch receptor of crayfish. It was found that the injection caused an increase in the static phase of the receptor potential. The results suggest that the intracellular hydrostatic pressure may be involved in generation of primary receptor responses of mechanoreceptors.

[The role of inhibition processes in the development of functional properties of neurons of the vibrissa projection area in the cat somatosensory cortex]. / Rol' protsessov tormozheniia v formirovanii funktsional'nykh svoistv neironov proektsionnoi zony vibriss somatosensornoi kory koshki.

The paper deals with the contribution of intracortical inhibitory processes to the organization of receptive fields in the vibrissae projection area of the somatosensory cortex. Inhibition blockade by means of microelectrophoretic application of picrotoxin and bicucullin was shown to lead to a loss of directional sensitivity of neurones. Activation of inhibition at remote glutamate application led to opposite changes: the neurones became directionally sensitive, and dependence was found between the spatial localization of activated neurones and the character of changes of detector parameters. Inhibitory processes caused by natural afferent stimulation led to similar changes of functional characteristics of neurones.

[Effect of picrotoxin on the receptive fields of cat sensomotor cortex neurons]. / Deistvie pikrotoksina na retseptivnye polia neironov sensomotornoi kory mozga koshki.

Microelectrophoretic application of picrotoxin which is known to reduce inhibition was used for studying inhibitory processes involved in the organization of the sensomotor cortex neurons in cats. The size of the neuronal receptive fields, character of responses and spontaneous activity compared before and after 1 to 3-min application of picrotoxin revealed a considerable enlargening of neuronal receptive fields. The data obtained suggest that inhibition plays a major part in formation of functional properties of neuron.