Modulation of Radula Opener Muscles in Aplysia
نویسندگان
چکیده
منابع مشابه
Modulation of radula opener muscles in Aplysia.
We observed fibers immunoreactive (IR) to serotonin (5-HT), the myomodulins (MMs), and FMRFamide on the I7-I10 complex in the marine mollusk Aplysia californica. The I7-I10 muscle complex, which produces radula opening, is innervated primarily by one motor neuron, B48. B48 is MM-IR and synthesizes authentic MM(A). When B48 is stimulated in a physiological manner, cAMP levels are increased in op...
متن کاملOutputs of radula mechanoafferent neurons in Aplysia are modulated by motor neurons, interneurons, and sensory neurons.
The gain of sensory inputs into the nervous system can be modulated so that the nature and intensity of afferent input is variable. Sometimes the variability is a function of other sensory inputs or of the state of motor systems that generate behavior. A form of sensory modulation was investigated in the Aplysia feeding system at the level of a radula mechanoafferent neuron (B21) that provides ...
متن کاملDiverse synaptic connections between peptidergic radula mechanoafferent neurons and neurons in the feeding system of Aplysia.
The buccal ganglion of Aplysia contains a heterogeneous population of peptidergic, radula mechanoafferent (RM) neurons. To investigate their function, two of the larger RM cells (B21, B22) were identified by morphological and electrophysiological criteria. Both are low-threshold, rapidly adapting, mechanoafferent neurons that responded to touch of the radula, the structure that grasps food duri...
متن کاملEffect of a serotonergic extrinsic modulatory neuron (MCC) on radula mechanoafferent function in Aplysia.
The serotonergic metacerebral cells (MCCs) and homologous neurons in related mollusks have been extensively investigated within the context of feeding. Although previous work has indicated that the MCCs exert widespread actions, MCC modulation of sensory neurons has not been identified. We characterized interactions between the MCCs and a cell that is part of a recently described group of bucca...
متن کاملRadula-centric and odontophore-centric kinematic models of swallowing in Aplysia californica.
Two kinematic models of the radula/odontophore of the marine mollusc Aplysia californica were created to characterize the movement of structures inside the buccal mass during the feeding cycle in vivo. Both models produce a continuous range of three-dimensional shape changes in the radula/odontophore, but they are fundamentally different in construction. The radulacentric model treats the radul...
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ژورنال
عنوان ژورنال: Journal of Neurophysiology
سال: 1999
ISSN: 0022-3077,1522-1598
DOI: 10.1152/jn.1999.82.3.1339