Comparative Study on Neural Oscillation in the Procerebrum of the Terrestrial Slugs Incilaria Bilineata and Limax Marginatus
| Autor: | Yutaka Kirino, Shoichi Toda, Shigenori Kawahara, Yasuyoshi Suzuki, Satoshi Watanabe |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Membrane potential
Tentacle Physiology Depolarization Local field potential Anatomy Aquatic Science Biology biology.organism_classification Limax marginatus Neural oscillation Insect Science Biophysics Limax maximus Animal Science and Zoology Molecular Biology Ecology Evolution Behavior and Systematics Cell mass |
| Zdroj: | Journal of Experimental Biology. 200:1851-1861 |
| ISSN: | 1477-9145 0022-0949 |
| DOI: | 10.1242/jeb.200.13.1851 |
| Popis: | Coherent oscillatory activities in procerebral neurones have been described in Limax maximus; however, the electrical properties of the procerebrum of other terrestrial molluscs are less well understood. We have examined oscillatory activity in the procerebrum of Incilaria bilineata and Limax marginatus. The local field potential measured in the procerebrum of I. bilineata showed repetitive peaks which had the opposite polarity from those measured in L. marginatus. Optical measurement of membrane potential using a potential-sensitive dye, di-4-ANEPPS, showed that the oscillations in I. bilineata occurred mainly in the internal mass while those in L. marginatus were located in the cell mass. An analysis of the waveform revealed that the depolarizing phase of the oscillations consists of both a slow and a rapid component in both species. The rapid component was most pronounced in the internal mass of I. bilineata but was prominent in the cell mass of L. marginatus. The superior tentacle nerve, which projects to the terminal mass, also showed oscillations in synchrony with those of the procerebrum. These results suggest that oscillations in procerebral interneurones are commonly generated in a region adjacent to the terminal mass and that these oscillations may affect the membrane potential of the neurones constituting the superior tentacle nerve. |
| Databáze: | OpenAIRE |
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