Food-rewarded conditioning and neurophysiological analysis of cheliped gripping behavior in crayfish
| Autor: | Naomi Takahashi, Masakazu Takahata |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Male
0301 basic medicine Central nervous system Action Potentials Experimental and Cognitive Psychology Astacoidea Motor Activity law.invention 03 medical and health sciences Behavioral Neuroscience 0302 clinical medicine Operant conditioning chamber Reward law Selective stimulation Neural Pathways medicine Animals Motor Neurons Procambarus clarkii biology Electromyography Brain Motor control Feeding Behavior Neurophysiology Evoked Potentials Motor biology.organism_classification Crayfish 030104 developmental biology medicine.anatomical_structure Food Linear Models Conditioning Operant Conditioning Female Psychology Neuroscience 030217 neurology & neurosurgery |
| Zdroj: | Physiology & Behavior. 180:159-169 |
| ISSN: | 0031-9384 |
| DOI: | 10.1016/j.physbeh.2017.08.021 |
| Popis: | Animals act on their environment to intentionally manipulate it with a defined purpose. This behavior generally needs a special organ suited for the purpose and a highly complex neural mechanism to perform voluntary motor control. Crustaceans with a pair of chelipeds show various manipulative behavior for dietary, exploratory, and reproductive purposes, but the neuronal mechanism underlying the cheliped manipulative behavior has not been clarified yet. In the present study, we trained crayfish Procambarus clarkii to perform a cheliped manipulative task by a newly developed operant paradigm in which animals gripped a specific object for food reward when a visual cue was presented. Animals were then tethered in an operant chamber during the task to enable reliable physiological recordings from the central nervous system. Neural activities descending from the brain were recorded extracellularly from the connective nerves between the brain and the subesophageal ganglion in the trained animals. We found those units showing spike activities that were significantly correlated with cheliped muscle activities, but not with strict timing of visual cue presentation. Although we could not test if those descending activities were necessary or sufficient for initiating the cheliped action by their selective stimulation, the present findings suggest that neural activities for controlling operant gripping behavior are formulated in the brain rather than in the subesophageal ganglion where cheliped motoneurons are present and visual information is transmitted through the brain. |
| Databáze: | OpenAIRE |
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