Neurons determining passive defensive response in the pteropod mollusk Clione limacina
| Autor: | T. P. Norekyan |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Sensory stimulation therapy
biology Physiology General Neuroscience Dopaminergic Stimulation Clione limacina Long-term potentiation Inhibitory postsynaptic potential biology.organism_classification medicine.anatomical_structure nervous system medicine Excitatory postsynaptic potential Neuron Neuroscience |
| Zdroj: | Neurophysiology. 21:495-502 |
| ISSN: | 1573-9007 0090-2977 |
| DOI: | 10.1007/bf01052883 |
| Popis: | Neurons responding to tactile stimulation of the head with bursts of action potentials of short latency followed by passive defensive response were found in the pedal ganglia and identified as Pd13. Stimulation of one Pd13 neuron leads to inhibition of the entire locomotor generator. A whole set of neurons, identified as Pl2, 3, 4, and 5, activated solely by intensive tactile stimulation of the head, were found in the pleural ganglia. Stimulating one such neuron also induces inhibition of the entire locomotor generator. These pleural cells are synaptically connected with Pd13 neurons and one EPSP in Pd13 unit corresponds to each action potential in the pleural cell. This connection has a facility for potentiation, subsequently replaced by habituation. In this way, pleural neurons also introduce Pd13 neurons into the inhibitory trend when activated by intensive tactile stimulation. Application of cerucal and ergotamine (dopaminergic receptor blockers) suppresses the inhibitory effect of the Pd13 neuron and pleural cells, thus indicating dopamine involvement in the inhibitory processes occurring in passive defensive reaction. |
| Databáze: | OpenAIRE |
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