Directional asymmetry in responses of local interneurons in the crayfish deutocerebrum to hydrodynamic stimulation of the lateral antennular flagellum
| Autor: | DeForest Mellon, Joseph A. C. Humphrey |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Physiology
media_common.quotation_subject Action Potentials Stimulation Astacoidea Aquatic Science Flagellum Biology Asymmetry Interneurons Physical Stimulation Water Movements Animals Molecular Biology Ecology Evolution Behavior and Systematics media_common musculoskeletal neural and ocular physiology Electric Conductivity Brain Anatomy Flow direction Crayfish Stimulation Chemical Flow velocity Flagella Insect Science Odorants Biophysics Animal Science and Zoology Deutocerebrum Hydrodynamic flow |
| Zdroj: | Journal of Experimental Biology. 210:2961-2968 |
| ISSN: | 1477-9145 0022-0949 |
| DOI: | 10.1242/jeb.003624 |
| Popis: | SUMMARYWe have recorded spiking responses from single, bimodally sensitive local interneurons (Type I) in the crayfish deutocerebrum to hydrodynamic and odorant stimuli flowing in two directions past the lateral antennular flagellum. Changing the direction of seamless introductions (meaning, with minimal variations of fluid velocity magnitude) of odorant flow past the flagellum, from proximal→distal to distal→proximal, did not consistently affect the dose-dependent responses of Type I neurons. By contrast, changing the direction of an abruptly initiated flow of water (or odorant) past the flagellum resulted in consistently larger numbers of spikes in response to this hydrodynamic stimulation when the flow direction was proximal→distal. This response asymmetry is discussed in relation to its possible relevance regarding antennular flicking behavior. The putative involvement of flagellar hydrodynamic receptors, the beaked hairs, and the hydrodynamic flow asymmetries they are exposed to, are examined theoretically in the accompanying paper. |
| Databáze: | OpenAIRE |
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