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Neural Mechanisms of Motor Program Switching inAplysia
The Aplysia multifunctional feeding central pattern generator (CPG) produces at least two types of motor programs, ingestion and egestion, that involve two sets of radula movements,Expand
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Central pattern generator for escape swimming in the notaspid sea slug Pleurobranchaea californica.
Escape swimming in the notaspid opisthobranch Pleurobranchaea is an episode of alternating dorsal and ventral body flexions that overrides all other behaviors. We have explored the structure of theExpand
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The Construction of Movement with Behavior-Specific and Behavior-Independent Modules
Growing evidence suggests that different forms of complex motor acts are constructed through flexible combinations of a small number of modules in interneuronal networks. It remains to beExpand
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Neuronal elements that mediate escape swimming and suppress feeding behavior in the predatory sea slug Pleurobranchaea.
1. The white, bilaterally paired A1 interneurons of the cerebropleural ganglion of Pleurobranchaea californica fire rhythmic bursts of action potentials during escape swimming behavior. We studiedExpand
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Feeding Neural Networks in the Mollusc Aplysia
Aplysia feeding is striking in that it is executed with a great deal of plasticity. At least in part, this flexibility is a result of the organization of the feeding neural network. To illustrateExpand
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Mechanism of spreading depression: a review of recent findings and a hypothesis.
Spreading depression of Leão (SD) can be provoked by numerous nonspecific mechanical, electrical, and chemical stimuli. A similar, if not identical, phenomenon can be provoked by hypoxia. SD isExpand
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Interneuronal and peptidergic control of motor pattern switching in Aplysia.
It has been proposed that a choice of specific behaviors can be mediated either by activation of behavior-specific higher order neurons or by distinct combinations of such neurons in differentExpand
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Role of calcium channels in spreading depression in rat hippocampal slices
In the CA1 region of rat hippocampal slices, spreading depression (SD) was provoked by a brief period of hypoxia or by localized application of high potassium solution. We measured extracellular DCExpand
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Interneuronal Basis of the Generation of Related but Distinct Motor Programs in Aplysia: Implications for Current Neuronal Models of Vertebrate Intralimb Coordination
Coordination of two sets of movements, protraction–retraction versus opening–closing, of the feeding apparatus (the radula) in ingestive and egestive motor programs of Aplysiaresembles vertebrateExpand
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Concerted GABAergic Actions of Aplysia Feeding Interneurons in Motor Program Specification
GABAergic inhibitory interneurons regulate the activity of diverse types of neural networks, but the specific roles of these interneurons in motor control are poorly understood. In the AplysiaExpand
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