Swim Initiation Neurons inTritonia diomedea
نویسندگان
چکیده
منابع مشابه
Identifiable neurons inhibited by Earth-strength magnetic stimuli in the mollusc Tritonia diomedea.
Diverse animals use the Earth's magnetic field as an orientation cue, but little is known about the sensory, processing and motor elements of the neural circuitry underlying magnetic orientation behavior. The marine mollusc Tritonia diomedea has both a magnetic compass sense and a simple nervous system accessible to electrophysiological analysis. Previous studies have revealed that four identif...
متن کاملIdentification of magnetically responsive neurons in the marine mollusc Tritonia diomedea.
Behavioral experiments have demonstrated that the marine mollusc Tritonia diomedea can use the Earth's magnetic field as an orientation cue. Little is known, however, about the neural mechanisms that underlie magnetic orientation behavior in this or any other animal. In previous studies, two neurons in the brain of Tritonia, known as LPd5 and RPd5, were shown to respond with enhanced electrical...
متن کاملDifferent functions for homologous serotonergic interneurons and serotonin in species-specific rhythmic behaviours.
Closely related species can exhibit different behaviours despite homologous neural substrates. The nudibranch molluscs Tritonia diomedea and Melibe leonina swim differently, yet their nervous systems contain homologous serotonergic neurons. In Tritonia, the dorsal swim interneurons (DSIs) are members of the swim central pattern generator (CPG) and their neurotransmitter serotonin is both necess...
متن کاملSwim initiation in the leech by serotonin-containing interneurones, cells 21 and 61.
Two pairs of serotonin-containing neurones, designated cells 21 and 61, were characterized physiologically and anatomically in the hirudinid leeches Macrobdella decora and Hirudo medicinalis. Both of these cells are bilaterally paired interneurones and each cell is weakly electrically coupled to the other serotonin-containing cells both intra- and interganglionically. Cells 21 and 61 are excite...
متن کاملSources of magnetic sensory input to identified neurons active during crawling in the marine mollusc Tritonia diomedea.
Although the nudibranch mollusc Tritonia diomedea orients to the geomagnetic field, the anatomical site and the mechanism of the geomagnetic transducer are not known. Previous work on semi-intact preparations of Tritonia diomedea in which the brain is intact and nerve connections to the periphery are maintained showed that identifiable pedal ganglion neurons Pd5 fired an increased number of act...
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ژورنال
عنوان ژورنال: American Zoologist
سال: 2001
ISSN: 0003-1569
DOI: 10.1093/icb/41.4.952