Cross-correlation analysis of cerebrobuccal connective activity during Aplysia feeding behaviour
| Autor: | A. De Santis, L. Geppetti, G.P. Ferguson, L. Fiore, A.W. Pieneman |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
0303 health sciences
medicine.medical_specialty biology En passant Cross correlation analysis General Medicine Anatomy Aplysia fasciata biology.organism_classification Nerve conduction velocity 03 medical and health sciences Electrophysiology 0302 clinical medicine Endocrinology Biting Feeding behavior Aplysia Internal medicine medicine 030217 neurology & neurosurgery 030304 developmental biology |
| Zdroj: | Comparative Biochemistry and Physiology Part A: Physiology. 106:501-513 |
| ISSN: | 0300-9629 |
| DOI: | 10.1016/0300-9629(93)90245-y |
| Popis: | 1. 1. Two “en passant” electrodes were implanted around the cerebrobuecal connective (CBC) of Aplysia and used to record the activity, in the unrestrained animal, under three behavioural conditions; (a) absence of feeding behaviour, (b) appetitive feeding behaviour and (c) consummatory feeding behaviour. 2. 2. The two simultaneous recordings were subjected to cross-correlation analysis, to subdivide spikes on the basis of their direction and speed of propagation. 3. 3. There was virtually no CBC activity in the absence of food and feeding behaviour. 4. 4. During appetitive feeding the metacerebral giant cell (MCC) was active and traffic was heaviest in the cerebral-to-buccal direction. 5. 5. During consummatory feeding, traffic was also sustained in the buccal-to-cerebral direction; there was a reduction in the activity of the MCC, and a peak in the activity travelling to the cerebral ganglia, in the region of higher conduction velocity, was especially pronounced. 6. 6. Further analysis showed this peak to have its largest amplitude during the actual ingestion of food and to be the result of the firing of several different units. 7. 7. CBC traffic in both directions was also activated in one case of “spontaneous” biting. |
| Databáze: | OpenAIRE |
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