[Naloxone-dependent responses of identified neurons in grape snails].

The effects of naloxone on rhythmic activity of the identified helix neurons possessing pacemaker properties were investigated. It has been found that the cellular responses on applications of naloxone (10-100 iM) depended on the type of a neuron. The effect of naloxone is likely to be mediated by the specific ionotropic opiate receptors which are under the control of endogenous opioids.